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Finding the Fourth Proportional to 87,245.88, 130,889.70 and 28,087.08

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Solution

The fourth proportional to 87,245.88, 130,889.70 and 28,087.08 is: 42,137.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,245.88 : 130,889.70 = 28,087.08 : x
  2. Step 2: Convert to fraction form
    87,245.88/130,889.70 = 28,087.08/x
  3. Step 3: Cross multiply
    87,245.88x = 130,889.70 × 28,087.08
  4. Step 4: Simplify right side
    87,245.88x = 3,676,309,475.08
  5. Step 5: Solve for x
    x = 3,676,309,475.08/87,245.88
  6. Step 6: Final answer
    x = 42,137.34

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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.