Home / 78,654,078.92-108,549,091.36-43,378,783.86

Finding the Fourth Proportional to 78,654,078.92, 108,549,091.36 and 43,378,783.86

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Solution

The fourth proportional to 78,654,078.92, 108,549,091.36 and 43,378,783.86 is: 59,866,285.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,654,078.92 : 108,549,091.36 = 43,378,783.86 : x
  2. Step 2: Convert to fraction form
    78,654,078.92/108,549,091.36 = 43,378,783.86/x
  3. Step 3: Cross multiply
    78,654,078.92x = 108,549,091.36 × 43,378,783.86
  4. Step 4: Simplify right side
    78,654,078.92x = 4,708,727,572,304,833
  5. Step 5: Solve for x
    x = 4,708,727,572,304,833/78,654,078.92
  6. Step 6: Final answer
    x = 59,866,285.86

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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.