Home / 87,006.78-120,127.14-66,827.52

Finding the Fourth Proportional to 87,006.78, 120,127.14 and 66,827.52

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Solution

The fourth proportional to 87,006.78, 120,127.14 and 66,827.52 is: 92,266.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,006.78 : 120,127.14 = 66,827.52 : x
  2. Step 2: Convert to fraction form
    87,006.78/120,127.14 = 66,827.52/x
  3. Step 3: Cross multiply
    87,006.78x = 120,127.14 × 66,827.52
  4. Step 4: Simplify right side
    87,006.78x = 8,027,798,850.89
  5. Step 5: Solve for x
    x = 8,027,798,850.89/87,006.78
  6. Step 6: Final answer
    x = 92,266.36

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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.