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Finding the Fourth Proportional to 84,347.40, 126,522.45 and 22,017.90

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Solution

The fourth proportional to 84,347.40, 126,522.45 and 22,017.90 is: 33,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,347.40 : 126,522.45 = 22,017.90 : x
  2. Step 2: Convert to fraction form
    84,347.40/126,522.45 = 22,017.90/x
  3. Step 3: Cross multiply
    84,347.40x = 126,522.45 × 22,017.90
  4. Step 4: Simplify right side
    84,347.40x = 2,785,758,651.86
  5. Step 5: Solve for x
    x = 2,785,758,651.86/84,347.40
  6. Step 6: Final answer
    x = 33,027.20

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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.