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Finding the Fourth Proportional to 29,140.80, 43,672.80 and 25,838.40

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Solution

The fourth proportional to 29,140.80, 43,672.80 and 25,838.40 is: 38,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,140.80 : 43,672.80 = 25,838.40 : x
  2. Step 2: Convert to fraction form
    29,140.80/43,672.80 = 25,838.40/x
  3. Step 3: Cross multiply
    29,140.80x = 43,672.80 × 25,838.40
  4. Step 4: Simplify right side
    29,140.80x = 1,128,435,275.52
  5. Step 5: Solve for x
    x = 1,128,435,275.52/29,140.80
  6. Step 6: Final answer
    x = 38,723.55

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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.