Home / 40,930.93-61,429.20-21,215.13

Finding the Fourth Proportional to 40,930.93, 61,429.20 and 21,215.13

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Solution

The fourth proportional to 40,930.93, 61,429.20 and 21,215.13 is: 31,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,930.93 : 61,429.20 = 21,215.13 : x
  2. Step 2: Convert to fraction form
    40,930.93/61,429.20 = 21,215.13/x
  3. Step 3: Cross multiply
    40,930.93x = 61,429.20 × 21,215.13
  4. Step 4: Simplify right side
    40,930.93x = 1,303,228,463.80
  5. Step 5: Solve for x
    x = 1,303,228,463.80/40,930.93
  6. Step 6: Final answer
    x = 31,839.70

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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.