Home / 78,543.24-117,888.66-41,130.15

Finding the Fourth Proportional to 78,543.24, 117,888.66 and 41,130.15

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Solution

The fourth proportional to 78,543.24, 117,888.66 and 41,130.15 is: 61,733.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,543.24 : 117,888.66 = 41,130.15 : x
  2. Step 2: Convert to fraction form
    78,543.24/117,888.66 = 41,130.15/x
  3. Step 3: Cross multiply
    78,543.24x = 117,888.66 × 41,130.15
  4. Step 4: Simplify right side
    78,543.24x = 4,848,778,269.10
  5. Step 5: Solve for x
    x = 4,848,778,269.10/78,543.24
  6. Step 6: Final answer
    x = 61,733.87

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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.