Home / 78,003,108.30-117,004,662.45-39,739,356.30

Finding the Fourth Proportional to 78,003,108.30, 117,004,662.45 and 39,739,356.30

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Solution

The fourth proportional to 78,003,108.30, 117,004,662.45 and 39,739,356.30 is: 59,609,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,108.30 : 117,004,662.45 = 39,739,356.30 : x
  2. Step 2: Convert to fraction form
    78,003,108.30/117,004,662.45 = 39,739,356.30/x
  3. Step 3: Cross multiply
    78,003,108.30x = 117,004,662.45 × 39,739,356.30
  4. Step 4: Simplify right side
    78,003,108.30x = 4,649,689,969,861,781
  5. Step 5: Solve for x
    x = 4,649,689,969,861,781/78,003,108.30
  6. Step 6: Final answer
    x = 59,609,034.45

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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.