Home / 87,031.80-130,549.32-69,710.76

Finding the Fourth Proportional to 87,031.80, 130,549.32 and 69,710.76

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Solution

The fourth proportional to 87,031.80, 130,549.32 and 69,710.76 is: 104,567.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,031.80 : 130,549.32 = 69,710.76 : x
  2. Step 2: Convert to fraction form
    87,031.80/130,549.32 = 69,710.76/x
  3. Step 3: Cross multiply
    87,031.80x = 130,549.32 × 69,710.76
  4. Step 4: Simplify right side
    87,031.80x = 9,100,692,314.68
  5. Step 5: Solve for x
    x = 9,100,692,314.68/87,031.80
  6. Step 6: Final answer
    x = 104,567.44

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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.