Home / 72,640.10-108,668.55-62,887.70

Finding the Fourth Proportional to 72,640.10, 108,668.55 and 62,887.70

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Solution

The fourth proportional to 72,640.10, 108,668.55 and 62,887.70 is: 94,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,640.10 : 108,668.55 = 62,887.70 : x
  2. Step 2: Convert to fraction form
    72,640.10/108,668.55 = 62,887.70/x
  3. Step 3: Cross multiply
    72,640.10x = 108,668.55 × 62,887.70
  4. Step 4: Simplify right side
    72,640.10x = 6,833,915,171.84
  5. Step 5: Solve for x
    x = 6,833,915,171.84/72,640.10
  6. Step 6: Final answer
    x = 94,079.10

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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.