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Finding the Fourth Proportional to 71,612.45, 107,449.05 and 38,323.88

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Solution

The fourth proportional to 71,612.45, 107,449.05 and 38,323.88 is: 57,502.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.45 : 107,449.05 = 38,323.88 : x
  2. Step 2: Convert to fraction form
    71,612.45/107,449.05 = 38,323.88/x
  3. Step 3: Cross multiply
    71,612.45x = 107,449.05 × 38,323.88
  4. Step 4: Simplify right side
    71,612.45x = 4,117,863,961.07
  5. Step 5: Solve for x
    x = 4,117,863,961.07/71,612.45
  6. Step 6: Final answer
    x = 57,502.07

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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.