Home / 87,122.39-120,271.14-58,431.58

Finding the Fourth Proportional to 87,122.39, 120,271.14 and 58,431.58

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Solution

The fourth proportional to 87,122.39, 120,271.14 and 58,431.58 is: 80,663.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,122.39 : 120,271.14 = 58,431.58 : x
  2. Step 2: Convert to fraction form
    87,122.39/120,271.14 = 58,431.58/x
  3. Step 3: Cross multiply
    87,122.39x = 120,271.14 × 58,431.58
  4. Step 4: Simplify right side
    87,122.39x = 7,027,632,738.60
  5. Step 5: Solve for x
    x = 7,027,632,738.60/87,122.39
  6. Step 6: Final answer
    x = 80,663.91

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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.