Home / 40,839.16-61,139.76-30,355.60

Finding the Fourth Proportional to 40,839.16, 61,139.76 and 30,355.60

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Solution

The fourth proportional to 40,839.16, 61,139.76 and 30,355.60 is: 45,444.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,839.16 : 61,139.76 = 30,355.60 : x
  2. Step 2: Convert to fraction form
    40,839.16/61,139.76 = 30,355.60/x
  3. Step 3: Cross multiply
    40,839.16x = 61,139.76 × 30,355.60
  4. Step 4: Simplify right side
    40,839.16x = 1,855,934,098.66
  5. Step 5: Solve for x
    x = 1,855,934,098.66/40,839.16
  6. Step 6: Final answer
    x = 45,444.96

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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.