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Finding the Fourth Proportional to 85,967.66, 128,910.01 and 36,034.35

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Solution

The fourth proportional to 85,967.66, 128,910.01 and 36,034.35 is: 54,034.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,967.66 : 128,910.01 = 36,034.35 : x
  2. Step 2: Convert to fraction form
    85,967.66/128,910.01 = 36,034.35/x
  3. Step 3: Cross multiply
    85,967.66x = 128,910.01 × 36,034.35
  4. Step 4: Simplify right side
    85,967.66x = 4,645,188,275.47
  5. Step 5: Solve for x
    x = 4,645,188,275.47/85,967.66
  6. Step 6: Final answer
    x = 54,034.14

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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.