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Finding the Fourth Proportional to 39,109,368.30, 54,866,489.70 and 39,109,368.30

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Solution

The fourth proportional to 39,109,368.30, 54,866,489.70 and 39,109,368.30 is: 54,866,489.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,109,368.30 : 54,866,489.70 = 39,109,368.30 : x
  2. Step 2: Convert to fraction form
    39,109,368.30/54,866,489.70 = 39,109,368.30/x
  3. Step 3: Cross multiply
    39,109,368.30x = 54,866,489.70 × 39,109,368.30
  4. Step 4: Simplify right side
    39,109,368.30x = 2,145,793,753,005,456.50
  5. Step 5: Solve for x
    x = 2,145,793,753,005,456.50/39,109,368.30
  6. Step 6: Final answer
    x = 54,866,489.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.