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Finding the Fourth Proportional to 72,259.32, 108,377.94 and 19,672.92

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Solution

The fourth proportional to 72,259.32, 108,377.94 and 19,672.92 is: 29,506.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,259.32 : 108,377.94 = 19,672.92 : x
  2. Step 2: Convert to fraction form
    72,259.32/108,377.94 = 19,672.92/x
  3. Step 3: Cross multiply
    72,259.32x = 108,377.94 × 19,672.92
  4. Step 4: Simplify right side
    72,259.32x = 2,132,110,543.38
  5. Step 5: Solve for x
    x = 2,132,110,543.38/72,259.32
  6. Step 6: Final answer
    x = 29,506.37

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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.