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Finding the Fourth Proportional to 87,497.76, 120,746.90 and 47,753.76

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Solution

The fourth proportional to 87,497.76, 120,746.90 and 47,753.76 is: 65,900.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,497.76 : 120,746.90 = 47,753.76 : x
  2. Step 2: Convert to fraction form
    87,497.76/120,746.90 = 47,753.76/x
  3. Step 3: Cross multiply
    87,497.76x = 120,746.90 × 47,753.76
  4. Step 4: Simplify right side
    87,497.76x = 5,766,118,483.34
  5. Step 5: Solve for x
    x = 5,766,118,483.34/87,497.76
  6. Step 6: Final answer
    x = 65,900.18

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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.