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Finding the Fourth Proportional to 62,521, 93,781.50 and 18,745

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Solution

The fourth proportional to 62,521, 93,781.50 and 18,745 is: 28,117.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,521 : 93,781.50 = 18,745 : x
  2. Step 2: Convert to fraction form
    62,521/93,781.50 = 18,745/x
  3. Step 3: Cross multiply
    62,521x = 93,781.50 × 18,745
  4. Step 4: Simplify right side
    62,521x = 1,757,934,217.50
  5. Step 5: Solve for x
    x = 1,757,934,217.50/62,521
  6. Step 6: Final answer
    x = 28,117.50

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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.