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Finding the Fourth Proportional to 85,691.52, 118,254.22 and 47,451.06

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Solution

The fourth proportional to 85,691.52, 118,254.22 and 47,451.06 is: 65,482.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,691.52 : 118,254.22 = 47,451.06 : x
  2. Step 2: Convert to fraction form
    85,691.52/118,254.22 = 47,451.06/x
  3. Step 3: Cross multiply
    85,691.52x = 118,254.22 × 47,451.06
  4. Step 4: Simplify right side
    85,691.52x = 5,611,287,851.22
  5. Step 5: Solve for x
    x = 5,611,287,851.22/85,691.52
  6. Step 6: Final answer
    x = 65,482.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.