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Finding the Fourth Proportional to 71,545.85, 98,743.55 and 42,866.65

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Solution

The fourth proportional to 71,545.85, 98,743.55 and 42,866.65 is: 59,162.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,545.85 : 98,743.55 = 42,866.65 : x
  2. Step 2: Convert to fraction form
    71,545.85/98,743.55 = 42,866.65/x
  3. Step 3: Cross multiply
    71,545.85x = 98,743.55 × 42,866.65
  4. Step 4: Simplify right side
    71,545.85x = 4,232,805,267.45
  5. Step 5: Solve for x
    x = 4,232,805,267.45/71,545.85
  6. Step 6: Final answer
    x = 59,162.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.