Home / 28,157,030.10-42,235,545.15-9,981,747.90

Finding the Fourth Proportional to 28,157,030.10, 42,235,545.15 and 9,981,747.90

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Solution

The fourth proportional to 28,157,030.10, 42,235,545.15 and 9,981,747.90 is: 14,972,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157,030.10 : 42,235,545.15 = 9,981,747.90 : x
  2. Step 2: Convert to fraction form
    28,157,030.10/42,235,545.15 = 9,981,747.90/x
  3. Step 3: Cross multiply
    28,157,030.10x = 42,235,545.15 × 9,981,747.90
  4. Step 4: Simplify right side
    28,157,030.10x = 421,584,564,106,367.69
  5. Step 5: Solve for x
    x = 421,584,564,106,367.69/28,157,030.10
  6. Step 6: Final answer
    x = 14,972,621.85

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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.