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Finding the Fourth Proportional to 85,967.59, 128,909.91 and 36,034.28

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Solution

The fourth proportional to 85,967.59, 128,909.91 and 36,034.28 is: 54,034.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,967.59 : 128,909.91 = 36,034.28 : x
  2. Step 2: Convert to fraction form
    85,967.59/128,909.91 = 36,034.28/x
  3. Step 3: Cross multiply
    85,967.59x = 128,909.91 × 36,034.28
  4. Step 4: Simplify right side
    85,967.59x = 4,645,175,642.95
  5. Step 5: Solve for x
    x = 4,645,175,642.95/85,967.59
  6. Step 6: Final answer
    x = 54,034.03

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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.