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Finding the Fourth Proportional to 87,146.76, 120,262.52 and 47,402.76

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Solution

The fourth proportional to 87,146.76, 120,262.52 and 47,402.76 is: 65,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,146.76 : 120,262.52 = 47,402.76 : x
  2. Step 2: Convert to fraction form
    87,146.76/120,262.52 = 47,402.76/x
  3. Step 3: Cross multiply
    87,146.76x = 120,262.52 × 47,402.76
  4. Step 4: Simplify right side
    87,146.76x = 5,700,775,372.56
  5. Step 5: Solve for x
    x = 5,700,775,372.56/87,146.76
  6. Step 6: Final answer
    x = 65,415.80

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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.