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Finding the Fourth Proportional to 87,081.83, 130,918.02 and 69,536.63

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Solution

The fourth proportional to 87,081.83, 130,918.02 and 69,536.63 is: 104,540.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,081.83 : 130,918.02 = 69,536.63 : x
  2. Step 2: Convert to fraction form
    87,081.83/130,918.02 = 69,536.63/x
  3. Step 3: Cross multiply
    87,081.83x = 130,918.02 × 69,536.63
  4. Step 4: Simplify right side
    87,081.83x = 9,103,597,638.33
  5. Step 5: Solve for x
    x = 9,103,597,638.33/87,081.83
  6. Step 6: Final answer
    x = 104,540.72

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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.