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Finding the Fourth Proportional to 86,281.98, 129,469.48 and 36,396.66

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Solution

The fourth proportional to 86,281.98, 129,469.48 and 36,396.66 is: 54,614.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,281.98 : 129,469.48 = 36,396.66 : x
  2. Step 2: Convert to fraction form
    86,281.98/129,469.48 = 36,396.66/x
  3. Step 3: Cross multiply
    86,281.98x = 129,469.48 × 36,396.66
  4. Step 4: Simplify right side
    86,281.98x = 4,712,256,643.94
  5. Step 5: Solve for x
    x = 4,712,256,643.94/86,281.98
  6. Step 6: Final answer
    x = 54,614.61

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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.