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Finding the Fourth Proportional to 79,290,169.20, 118,935,253.80 and 55,103,698.80

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Solution

The fourth proportional to 79,290,169.20, 118,935,253.80 and 55,103,698.80 is: 82,655,548.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,290,169.20 : 118,935,253.80 = 55,103,698.80 : x
  2. Step 2: Convert to fraction form
    79,290,169.20/118,935,253.80 = 55,103,698.80/x
  3. Step 3: Cross multiply
    79,290,169.20x = 118,935,253.80 × 55,103,698.80
  4. Step 4: Simplify right side
    79,290,169.20x = 6,553,772,402,096,755
  5. Step 5: Solve for x
    x = 6,553,772,402,096,755/79,290,169.20
  6. Step 6: Final answer
    x = 82,655,548.20

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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.