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Finding the Fourth Proportional to 61,174.84, 84,385.50 and 38,478.04

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Solution

The fourth proportional to 61,174.84, 84,385.50 and 38,478.04 is: 53,077.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,174.84 : 84,385.50 = 38,478.04 : x
  2. Step 2: Convert to fraction form
    61,174.84/84,385.50 = 38,478.04/x
  3. Step 3: Cross multiply
    61,174.84x = 84,385.50 × 38,478.04
  4. Step 4: Simplify right side
    61,174.84x = 3,246,988,644.42
  5. Step 5: Solve for x
    x = 3,246,988,644.42/61,174.84
  6. Step 6: Final answer
    x = 53,077.19

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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.