Home / 40,761.12-61,147.38-38,520.12

Finding the Fourth Proportional to 40,761.12, 61,147.38 and 38,520.12

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Solution

The fourth proportional to 40,761.12, 61,147.38 and 38,520.12 is: 57,785.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,761.12 : 61,147.38 = 38,520.12 : x
  2. Step 2: Convert to fraction form
    40,761.12/61,147.38 = 38,520.12/x
  3. Step 3: Cross multiply
    40,761.12x = 61,147.38 × 38,520.12
  4. Step 4: Simplify right side
    40,761.12x = 2,355,404,415.29
  5. Step 5: Solve for x
    x = 2,355,404,415.29/40,761.12
  6. Step 6: Final answer
    x = 57,785.57

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1.5x scale

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.