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Finding the Fourth Proportional to 71,295.89, 98,381.57 and 42,609.87

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Solution

The fourth proportional to 71,295.89, 98,381.57 and 42,609.87 is: 58,797.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,295.89 : 98,381.57 = 42,609.87 : x
  2. Step 2: Convert to fraction form
    71,295.89/98,381.57 = 42,609.87/x
  3. Step 3: Cross multiply
    71,295.89x = 98,381.57 × 42,609.87
  4. Step 4: Simplify right side
    71,295.89x = 4,192,025,695.05
  5. Step 5: Solve for x
    x = 4,192,025,695.05/71,295.89
  6. Step 6: Final answer
    x = 58,797.58

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1.5x scale

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.