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Finding the Fourth Proportional to 84,920.90, 127,517.35 and 67,535.30

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Solution

The fourth proportional to 84,920.90, 127,517.35 and 67,535.30 is: 101,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,920.90 : 127,517.35 = 67,535.30 : x
  2. Step 2: Convert to fraction form
    84,920.90/127,517.35 = 67,535.30/x
  3. Step 3: Cross multiply
    84,920.90x = 127,517.35 × 67,535.30
  4. Step 4: Simplify right side
    84,920.90x = 8,611,922,487.46
  5. Step 5: Solve for x
    x = 8,611,922,487.46/84,920.90
  6. Step 6: Final answer
    x = 101,411.11

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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.