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Finding the Fourth Proportional to 71,255.28, 107,026.32 and 42,848.64

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Solution

The fourth proportional to 71,255.28, 107,026.32 and 42,848.64 is: 64,359.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,255.28 : 107,026.32 = 42,848.64 : x
  2. Step 2: Convert to fraction form
    71,255.28/107,026.32 = 42,848.64/x
  3. Step 3: Cross multiply
    71,255.28x = 107,026.32 × 42,848.64
  4. Step 4: Simplify right side
    71,255.28x = 4,585,932,256.20
  5. Step 5: Solve for x
    x = 4,585,932,256.20/71,255.28
  6. Step 6: Final answer
    x = 64,359.19

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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.