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Finding the Fourth Proportional to 72,037.68, 108,056.52 and 19,451.28

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Solution

The fourth proportional to 72,037.68, 108,056.52 and 19,451.28 is: 29,176.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,037.68 : 108,056.52 = 19,451.28 : x
  2. Step 2: Convert to fraction form
    72,037.68/108,056.52 = 19,451.28/x
  3. Step 3: Cross multiply
    72,037.68x = 108,056.52 × 19,451.28
  4. Step 4: Simplify right side
    72,037.68x = 2,101,837,626.35
  5. Step 5: Solve for x
    x = 2,101,837,626.35/72,037.68
  6. Step 6: Final answer
    x = 29,176.92

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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.