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Finding the Fourth Proportional to 60,487.70, 90,746.82 and 42,753.21

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Solution

The fourth proportional to 60,487.70, 90,746.82 and 42,753.21 is: 64,140.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,487.70 : 90,746.82 = 42,753.21 : x
  2. Step 2: Convert to fraction form
    60,487.70/90,746.82 = 42,753.21/x
  3. Step 3: Cross multiply
    60,487.70x = 90,746.82 × 42,753.21
  4. Step 4: Simplify right side
    60,487.70x = 3,879,717,852.29
  5. Step 5: Solve for x
    x = 3,879,717,852.29/60,487.70
  6. Step 6: Final answer
    x = 64,140.61

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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.