Home / 78,003,104.55-117,004,656.83-39,739,352.55

Finding the Fourth Proportional to 78,003,104.55, 117,004,656.83 and 39,739,352.55

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Solution

The fourth proportional to 78,003,104.55, 117,004,656.83 and 39,739,352.55 is: 59,609,028.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,104.55 : 117,004,656.83 = 39,739,352.55 : x
  2. Step 2: Convert to fraction form
    78,003,104.55/117,004,656.83 = 39,739,352.55/x
  3. Step 3: Cross multiply
    78,003,104.55x = 117,004,656.83 × 39,739,352.55
  4. Step 4: Simplify right side
    78,003,104.55x = 4,649,689,307,560,438
  5. Step 5: Solve for x
    x = 4,649,689,307,560,438/78,003,104.55
  6. Step 6: Final answer
    x = 59,609,028.83

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.