Home / 87,307.32-131,018.28-47,892

Finding the Fourth Proportional to 87,307.32, 131,018.28 and 47,892

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Solution

The fourth proportional to 87,307.32, 131,018.28 and 47,892 is: 71,869.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,307.32 : 131,018.28 = 47,892 : x
  2. Step 2: Convert to fraction form
    87,307.32/131,018.28 = 47,892/x
  3. Step 3: Cross multiply
    87,307.32x = 131,018.28 × 47,892
  4. Step 4: Simplify right side
    87,307.32x = 6,274,727,465.76
  5. Step 5: Solve for x
    x = 6,274,727,465.76/87,307.32
  6. Step 6: Final answer
    x = 71,869.43

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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.