Home / 87,017.60-120,091.20-49,301.12

Finding the Fourth Proportional to 87,017.60, 120,091.20 and 49,301.12

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Solution

The fourth proportional to 87,017.60, 120,091.20 and 49,301.12 is: 68,039.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,017.60 : 120,091.20 = 49,301.12 : x
  2. Step 2: Convert to fraction form
    87,017.60/120,091.20 = 49,301.12/x
  3. Step 3: Cross multiply
    87,017.60x = 120,091.20 × 49,301.12
  4. Step 4: Simplify right side
    87,017.60x = 5,920,630,662.14
  5. Step 5: Solve for x
    x = 5,920,630,662.14/87,017.60
  6. Step 6: Final answer
    x = 68,039.46

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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.