Home / 40,915.20-61,411.95-21,207.90

Finding the Fourth Proportional to 40,915.20, 61,411.95 and 21,207.90

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Solution

The fourth proportional to 40,915.20, 61,411.95 and 21,207.90 is: 31,832.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,915.20 : 61,411.95 = 21,207.90 : x
  2. Step 2: Convert to fraction form
    40,915.20/61,411.95 = 21,207.90/x
  3. Step 3: Cross multiply
    40,915.20x = 61,411.95 × 21,207.90
  4. Step 4: Simplify right side
    40,915.20x = 1,302,418,494.41
  5. Step 5: Solve for x
    x = 1,302,418,494.41/40,915.20
  6. Step 6: Final answer
    x = 31,832.14

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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.