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Finding the Fourth Proportional to 72,543.96, 108,750.36 and 25,785.90

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Solution

The fourth proportional to 72,543.96, 108,750.36 and 25,785.90 is: 38,655.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,543.96 : 108,750.36 = 25,785.90 : x
  2. Step 2: Convert to fraction form
    72,543.96/108,750.36 = 25,785.90/x
  3. Step 3: Cross multiply
    72,543.96x = 108,750.36 × 25,785.90
  4. Step 4: Simplify right side
    72,543.96x = 2,804,225,907.92
  5. Step 5: Solve for x
    x = 2,804,225,907.92/72,543.96
  6. Step 6: Final answer
    x = 38,655.54

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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.