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Finding the Fourth Proportional to 85,177.90, 127,784.68 and 29,013.58

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Solution

The fourth proportional to 85,177.90, 127,784.68 and 29,013.58 is: 43,526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,177.90 : 127,784.68 = 29,013.58 : x
  2. Step 2: Convert to fraction form
    85,177.90/127,784.68 = 29,013.58/x
  3. Step 3: Cross multiply
    85,177.90x = 127,784.68 × 29,013.58
  4. Step 4: Simplify right side
    85,177.90x = 3,707,491,035.95
  5. Step 5: Solve for x
    x = 3,707,491,035.95/85,177.90
  6. Step 6: Final answer
    x = 43,526.44

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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.