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Finding the Fourth Proportional to 84,691.44, 127,043.37 and 28,531.26

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Solution

The fourth proportional to 84,691.44, 127,043.37 and 28,531.26 is: 42,798.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,691.44 : 127,043.37 = 28,531.26 : x
  2. Step 2: Convert to fraction form
    84,691.44/127,043.37 = 28,531.26/x
  3. Step 3: Cross multiply
    84,691.44x = 127,043.37 × 28,531.26
  4. Step 4: Simplify right side
    84,691.44x = 3,624,707,420.75
  5. Step 5: Solve for x
    x = 3,624,707,420.75/84,691.44
  6. Step 6: Final answer
    x = 42,798.98

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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.