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Finding the Fourth Proportional to 20,868,711.60, 29,236,102.80 and 20,868,711.60

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Solution

The fourth proportional to 20,868,711.60, 29,236,102.80 and 20,868,711.60 is: 29,236,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868,711.60 : 29,236,102.80 = 20,868,711.60 : x
  2. Step 2: Convert to fraction form
    20,868,711.60/29,236,102.80 = 20,868,711.60/x
  3. Step 3: Cross multiply
    20,868,711.60x = 29,236,102.80 × 20,868,711.60
  4. Step 4: Simplify right side
    20,868,711.60x = 610,119,797,641,152.50
  5. Step 5: Solve for x
    x = 610,119,797,641,152.50/20,868,711.60
  6. Step 6: Final answer
    x = 29,236,102.80

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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.