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Finding the Fourth Proportional to 86,165.50, 129,257.52 and 36,250.68

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Solution

The fourth proportional to 86,165.50, 129,257.52 and 36,250.68 is: 54,379.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,165.50 : 129,257.52 = 36,250.68 : x
  2. Step 2: Convert to fraction form
    86,165.50/129,257.52 = 36,250.68/x
  3. Step 3: Cross multiply
    86,165.50x = 129,257.52 × 36,250.68
  4. Step 4: Simplify right side
    86,165.50x = 4,685,672,995.11
  5. Step 5: Solve for x
    x = 4,685,672,995.11/86,165.50
  6. Step 6: Final answer
    x = 54,379.92

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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.