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Finding the Fourth Proportional to 84,801.71, 127,205.27 and 42,658.76

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Solution

The fourth proportional to 84,801.71, 127,205.27 and 42,658.76 is: 63,989.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,801.71 : 127,205.27 = 42,658.76 : x
  2. Step 2: Convert to fraction form
    84,801.71/127,205.27 = 42,658.76/x
  3. Step 3: Cross multiply
    84,801.71x = 127,205.27 × 42,658.76
  4. Step 4: Simplify right side
    84,801.71x = 5,426,418,234.35
  5. Step 5: Solve for x
    x = 5,426,418,234.35/84,801.71
  6. Step 6: Final answer
    x = 63,989.49

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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.