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Finding the Fourth Proportional to 87,070.32, 120,164.04 and 49,347

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Solution

The fourth proportional to 87,070.32, 120,164.04 and 49,347 is: 68,102.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,070.32 : 120,164.04 = 49,347 : x
  2. Step 2: Convert to fraction form
    87,070.32/120,164.04 = 49,347/x
  3. Step 3: Cross multiply
    87,070.32x = 120,164.04 × 49,347
  4. Step 4: Simplify right side
    87,070.32x = 5,929,734,881.88
  5. Step 5: Solve for x
    x = 5,929,734,881.88/87,070.32
  6. Step 6: Final answer
    x = 68,102.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.