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Finding the Fourth Proportional to 71,149.95, 106,730.33 and 21,226.14

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Solution

The fourth proportional to 71,149.95, 106,730.33 and 21,226.14 is: 31,840.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,149.95 : 106,730.33 = 21,226.14 : x
  2. Step 2: Convert to fraction form
    71,149.95/106,730.33 = 21,226.14/x
  3. Step 3: Cross multiply
    71,149.95x = 106,730.33 × 21,226.14
  4. Step 4: Simplify right side
    71,149.95x = 2,265,472,820.70
  5. Step 5: Solve for x
    x = 2,265,472,820.70/71,149.95
  6. Step 6: Final answer
    x = 31,840.82

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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.