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Finding the Fourth Proportional to 81,952.20, 122,928.30 and 29,363.40

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Solution

The fourth proportional to 81,952.20, 122,928.30 and 29,363.40 is: 44,045.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,952.20 : 122,928.30 = 29,363.40 : x
  2. Step 2: Convert to fraction form
    81,952.20/122,928.30 = 29,363.40/x
  3. Step 3: Cross multiply
    81,952.20x = 122,928.30 × 29,363.40
  4. Step 4: Simplify right side
    81,952.20x = 3,609,592,844.22
  5. Step 5: Solve for x
    x = 3,609,592,844.22/81,952.20
  6. Step 6: Final answer
    x = 44,045.10

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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.