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Finding the Fourth Proportional to 86,359.77, 129,311.24 and 67,677.93

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Solution

The fourth proportional to 86,359.77, 129,311.24 and 67,677.93 is: 101,337.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,359.77 : 129,311.24 = 67,677.93 : x
  2. Step 2: Convert to fraction form
    86,359.77/129,311.24 = 67,677.93/x
  3. Step 3: Cross multiply
    86,359.77x = 129,311.24 × 67,677.93
  4. Step 4: Simplify right side
    86,359.77x = 8,751,516,710.54
  5. Step 5: Solve for x
    x = 8,751,516,710.54/86,359.77
  6. Step 6: Final answer
    x = 101,337.89

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1.5x scale

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.