Home / 72,269.28-108,403.92-47,639.52

Finding the Fourth Proportional to 72,269.28, 108,403.92 and 47,639.52

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Solution

The fourth proportional to 72,269.28, 108,403.92 and 47,639.52 is: 71,459.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,269.28 : 108,403.92 = 47,639.52 : x
  2. Step 2: Convert to fraction form
    72,269.28/108,403.92 = 47,639.52/x
  3. Step 3: Cross multiply
    72,269.28x = 108,403.92 × 47,639.52
  4. Step 4: Simplify right side
    72,269.28x = 5,164,310,714.92
  5. Step 5: Solve for x
    x = 5,164,310,714.92/72,269.28
  6. Step 6: Final answer
    x = 71,459.28

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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.