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Finding the Fourth Proportional to 42,447.30, 63,670.95 and 27,672.90

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Solution

The fourth proportional to 42,447.30, 63,670.95 and 27,672.90 is: 41,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,447.30 : 63,670.95 = 27,672.90 : x
  2. Step 2: Convert to fraction form
    42,447.30/63,670.95 = 27,672.90/x
  3. Step 3: Cross multiply
    42,447.30x = 63,670.95 × 27,672.90
  4. Step 4: Simplify right side
    42,447.30x = 1,761,959,832.26
  5. Step 5: Solve for x
    x = 1,761,959,832.26/42,447.30
  6. Step 6: Final answer
    x = 41,509.35

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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.