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Finding the Fourth Proportional to 42,642.48, 63,880.60 and 25,961.14

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Solution

The fourth proportional to 42,642.48, 63,880.60 and 25,961.14 is: 38,891.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,642.48 : 63,880.60 = 25,961.14 : x
  2. Step 2: Convert to fraction form
    42,642.48/63,880.60 = 25,961.14/x
  3. Step 3: Cross multiply
    42,642.48x = 63,880.60 × 25,961.14
  4. Step 4: Simplify right side
    42,642.48x = 1,658,413,199.88
  5. Step 5: Solve for x
    x = 1,658,413,199.88/42,642.48
  6. Step 6: Final answer
    x = 38,891.11

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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.