Home / 87,290.05-120,460.40-49,564.30

Finding the Fourth Proportional to 87,290.05, 120,460.40 and 49,564.30

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Solution

The fourth proportional to 87,290.05, 120,460.40 and 49,564.30 is: 68,398.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,290.05 : 120,460.40 = 49,564.30 : x
  2. Step 2: Convert to fraction form
    87,290.05/120,460.40 = 49,564.30/x
  3. Step 3: Cross multiply
    87,290.05x = 120,460.40 × 49,564.30
  4. Step 4: Simplify right side
    87,290.05x = 5,970,535,155.90
  5. Step 5: Solve for x
    x = 5,970,535,155.90/87,290.05
  6. Step 6: Final answer
    x = 68,398.81

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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.