Home / 85,031.28-127,436-52,997.12

Finding the Fourth Proportional to 85,031.28, 127,436 and 52,997.12

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Solution

The fourth proportional to 85,031.28, 127,436 and 52,997.12 is: 79,426.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,031.28 : 127,436 = 52,997.12 : x
  2. Step 2: Convert to fraction form
    85,031.28/127,436 = 52,997.12/x
  3. Step 3: Cross multiply
    85,031.28x = 127,436 × 52,997.12
  4. Step 4: Simplify right side
    85,031.28x = 6,753,740,984.32
  5. Step 5: Solve for x
    x = 6,753,740,984.32/85,031.28
  6. Step 6: Final answer
    x = 79,426.55

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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.