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Finding the Fourth Proportional to 28,734,363.40, 43,101,545.10 and 20,125,019.20

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Solution

The fourth proportional to 28,734,363.40, 43,101,545.10 and 20,125,019.20 is: 30,187,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,734,363.40 : 43,101,545.10 = 20,125,019.20 : x
  2. Step 2: Convert to fraction form
    28,734,363.40/43,101,545.10 = 20,125,019.20/x
  3. Step 3: Cross multiply
    28,734,363.40x = 43,101,545.10 × 20,125,019.20
  4. Step 4: Simplify right side
    28,734,363.40x = 867,419,422,687,165.88
  5. Step 5: Solve for x
    x = 867,419,422,687,165.88/28,734,363.40
  6. Step 6: Final answer
    x = 30,187,528.80

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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.