Home / 72,004.30-108,006.45-45,727.90

Finding the Fourth Proportional to 72,004.30, 108,006.45 and 45,727.90

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Solution

The fourth proportional to 72,004.30, 108,006.45 and 45,727.90 is: 68,591.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,004.30 : 108,006.45 = 45,727.90 : x
  2. Step 2: Convert to fraction form
    72,004.30/108,006.45 = 45,727.90/x
  3. Step 3: Cross multiply
    72,004.30x = 108,006.45 × 45,727.90
  4. Step 4: Simplify right side
    72,004.30x = 4,938,908,144.96
  5. Step 5: Solve for x
    x = 4,938,908,144.96/72,004.30
  6. Step 6: Final answer
    x = 68,591.85

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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.