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Finding the Fourth Proportional to 71,228.65, 106,803.51 and 29,138.26

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Solution

The fourth proportional to 71,228.65, 106,803.51 and 29,138.26 is: 43,691.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,228.65 : 106,803.51 = 29,138.26 : x
  2. Step 2: Convert to fraction form
    71,228.65/106,803.51 = 29,138.26/x
  3. Step 3: Cross multiply
    71,228.65x = 106,803.51 × 29,138.26
  4. Step 4: Simplify right side
    71,228.65x = 3,112,068,443.29
  5. Step 5: Solve for x
    x = 3,112,068,443.29/71,228.65
  6. Step 6: Final answer
    x = 43,691.25

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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.