Home / 42,478.33-63,719.12-21,677.53

Finding the Fourth Proportional to 42,478.33, 63,719.12 and 21,677.53

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Solution

The fourth proportional to 42,478.33, 63,719.12 and 21,677.53 is: 32,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,478.33 : 63,719.12 = 21,677.53 : x
  2. Step 2: Convert to fraction form
    42,478.33/63,719.12 = 21,677.53/x
  3. Step 3: Cross multiply
    42,478.33x = 63,719.12 × 21,677.53
  4. Step 4: Simplify right side
    42,478.33x = 1,381,273,135.37
  5. Step 5: Solve for x
    x = 1,381,273,135.37/42,478.33
  6. Step 6: Final answer
    x = 32,517.12

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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.