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Finding the Fourth Proportional to 79,124,909.80, 118,687,364.70 and 44,545,815.40

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Solution

The fourth proportional to 79,124,909.80, 118,687,364.70 and 44,545,815.40 is: 66,818,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,124,909.80 : 118,687,364.70 = 44,545,815.40 : x
  2. Step 2: Convert to fraction form
    79,124,909.80/118,687,364.70 = 44,545,815.40/x
  3. Step 3: Cross multiply
    79,124,909.80x = 118,687,364.70 × 44,545,815.40
  4. Step 4: Simplify right side
    79,124,909.80x = 5,287,025,438,238,676
  5. Step 5: Solve for x
    x = 5,287,025,438,238,676/79,124,909.80
  6. Step 6: Final answer
    x = 66,818,723.10

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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.