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Finding the Fourth Proportional to 86,490.77, 129,745.39 and 36,575.91

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Solution

The fourth proportional to 86,490.77, 129,745.39 and 36,575.91 is: 54,867.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,490.77 : 129,745.39 = 36,575.91 : x
  2. Step 2: Convert to fraction form
    86,490.77/129,745.39 = 36,575.91/x
  3. Step 3: Cross multiply
    86,490.77x = 129,745.39 × 36,575.91
  4. Step 4: Simplify right side
    86,490.77x = 4,745,555,946.73
  5. Step 5: Solve for x
    x = 4,745,555,946.73/86,490.77
  6. Step 6: Final answer
    x = 54,867.77

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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.