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Finding the Fourth Proportional to 87,047.78, 119,343.61 and 85,473.14

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Solution

The fourth proportional to 87,047.78, 119,343.61 and 85,473.14 is: 117,184.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,047.78 : 119,343.61 = 85,473.14 : x
  2. Step 2: Convert to fraction form
    87,047.78/119,343.61 = 85,473.14/x
  3. Step 3: Cross multiply
    87,047.78x = 119,343.61 × 85,473.14
  4. Step 4: Simplify right side
    87,047.78x = 10,200,672,275.23
  5. Step 5: Solve for x
    x = 10,200,672,275.23/87,047.78
  6. Step 6: Final answer
    x = 117,184.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.