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Finding the Fourth Proportional to 87,992.80, 131,816.40 and 59,999.20

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Solution

The fourth proportional to 87,992.80, 131,816.40 and 59,999.20 is: 89,880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,992.80 : 131,816.40 = 59,999.20 : x
  2. Step 2: Convert to fraction form
    87,992.80/131,816.40 = 59,999.20/x
  3. Step 3: Cross multiply
    87,992.80x = 131,816.40 × 59,999.20
  4. Step 4: Simplify right side
    87,992.80x = 7,908,878,546.88
  5. Step 5: Solve for x
    x = 7,908,878,546.88/87,992.80
  6. Step 6: Final answer
    x = 89,880.97

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1.5x scale

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.