Home / 81,538.53-112,524.11-45,240.65

Finding the Fourth Proportional to 81,538.53, 112,524.11 and 45,240.65

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Solution

The fourth proportional to 81,538.53, 112,524.11 and 45,240.65 is: 62,432.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,538.53 : 112,524.11 = 45,240.65 : x
  2. Step 2: Convert to fraction form
    81,538.53/112,524.11 = 45,240.65/x
  3. Step 3: Cross multiply
    81,538.53x = 112,524.11 × 45,240.65
  4. Step 4: Simplify right side
    81,538.53x = 5,090,663,877.07
  5. Step 5: Solve for x
    x = 5,090,663,877.07/81,538.53
  6. Step 6: Final answer
    x = 62,432.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.