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Finding the Fourth Proportional to 84,920.40, 127,380.60 and 34,974.79

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Solution

The fourth proportional to 84,920.40, 127,380.60 and 34,974.79 is: 52,462.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,920.40 : 127,380.60 = 34,974.79 : x
  2. Step 2: Convert to fraction form
    84,920.40/127,380.60 = 34,974.79/x
  3. Step 3: Cross multiply
    84,920.40x = 127,380.60 × 34,974.79
  4. Step 4: Simplify right side
    84,920.40x = 4,455,109,416.62
  5. Step 5: Solve for x
    x = 4,455,109,416.62/84,920.40
  6. Step 6: Final answer
    x = 52,462.18

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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.