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Finding the Fourth Proportional to 87,068.30, 120,119.70 and 56,843.96

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Solution

The fourth proportional to 87,068.30, 120,119.70 and 56,843.96 is: 78,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,068.30 : 120,119.70 = 56,843.96 : x
  2. Step 2: Convert to fraction form
    87,068.30/120,119.70 = 56,843.96/x
  3. Step 3: Cross multiply
    87,068.30x = 120,119.70 × 56,843.96
  4. Step 4: Simplify right side
    87,068.30x = 6,828,079,422.01
  5. Step 5: Solve for x
    x = 6,828,079,422.01/87,068.30
  6. Step 6: Final answer
    x = 78,422.11

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1.5x scale

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.