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Finding the Fourth Proportional to 84,818.30, 127,227.45 and 42,827.90

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Solution

The fourth proportional to 84,818.30, 127,227.45 and 42,827.90 is: 64,241.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,818.30 : 127,227.45 = 42,827.90 : x
  2. Step 2: Convert to fraction form
    84,818.30/127,227.45 = 42,827.90/x
  3. Step 3: Cross multiply
    84,818.30x = 127,227.45 × 42,827.90
  4. Step 4: Simplify right side
    84,818.30x = 5,448,884,505.86
  5. Step 5: Solve for x
    x = 5,448,884,505.86/84,818.30
  6. Step 6: Final answer
    x = 64,241.85

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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.