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Finding the Fourth Proportional to 87,067.77, 130,601.68 and 57,478.68

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Solution

The fourth proportional to 87,067.77, 130,601.68 and 57,478.68 is: 86,218.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,067.77 : 130,601.68 = 57,478.68 : x
  2. Step 2: Convert to fraction form
    87,067.77/130,601.68 = 57,478.68/x
  3. Step 3: Cross multiply
    87,067.77x = 130,601.68 × 57,478.68
  4. Step 4: Simplify right side
    87,067.77x = 7,506,811,884.79
  5. Step 5: Solve for x
    x = 7,506,811,884.79/87,067.77
  6. Step 6: Final answer
    x = 86,218.04

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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.