Home / 72,305.18-108,432.37-21,689.12

Finding the Fourth Proportional to 72,305.18, 108,432.37 and 21,689.12

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Solution

The fourth proportional to 72,305.18, 108,432.37 and 21,689.12 is: 32,526.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,305.18 : 108,432.37 = 21,689.12 : x
  2. Step 2: Convert to fraction form
    72,305.18/108,432.37 = 21,689.12/x
  3. Step 3: Cross multiply
    72,305.18x = 108,432.37 × 21,689.12
  4. Step 4: Simplify right side
    72,305.18x = 2,351,802,373.07
  5. Step 5: Solve for x
    x = 2,351,802,373.07/72,305.18
  6. Step 6: Final answer
    x = 32,526.06

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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.