Home / 42,915.78-64,391.45-23,171.13

Finding the Fourth Proportional to 42,915.78, 64,391.45 and 23,171.13

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Solution

The fourth proportional to 42,915.78, 64,391.45 and 23,171.13 is: 34,766.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,915.78 : 64,391.45 = 23,171.13 : x
  2. Step 2: Convert to fraction form
    42,915.78/64,391.45 = 23,171.13/x
  3. Step 3: Cross multiply
    42,915.78x = 64,391.45 × 23,171.13
  4. Step 4: Simplify right side
    42,915.78x = 1,492,022,542.98
  5. Step 5: Solve for x
    x = 1,492,022,542.98/42,915.78
  6. Step 6: Final answer
    x = 34,766.29

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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.