Home / 78,654,084.92-108,549,099.66-43,378,789.84

Finding the Fourth Proportional to 78,654,084.92, 108,549,099.66 and 43,378,789.84

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Solution

The fourth proportional to 78,654,084.92, 108,549,099.66 and 43,378,789.84 is: 59,866,294.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,654,084.92 : 108,549,099.66 = 43,378,789.84 : x
  2. Step 2: Convert to fraction form
    78,654,084.92/108,549,099.66 = 43,378,789.84/x
  3. Step 3: Cross multiply
    78,654,084.92x = 108,549,099.66 × 43,378,789.84
  4. Step 4: Simplify right side
    78,654,084.92x = 4,708,728,581,472,356
  5. Step 5: Solve for x
    x = 4,708,728,581,472,356/78,654,084.92
  6. Step 6: Final answer
    x = 59,866,294.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.