Home / 87,309.23-120,480.08-49,061.54

Finding the Fourth Proportional to 87,309.23, 120,480.08 and 49,061.54

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Solution

The fourth proportional to 87,309.23, 120,480.08 and 49,061.54 is: 67,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,309.23 : 120,480.08 = 49,061.54 : x
  2. Step 2: Convert to fraction form
    87,309.23/120,480.08 = 49,061.54/x
  3. Step 3: Cross multiply
    87,309.23x = 120,480.08 × 49,061.54
  4. Step 4: Simplify right side
    87,309.23x = 5,910,938,607.01
  5. Step 5: Solve for x
    x = 5,910,938,607.01/87,309.23
  6. Step 6: Final answer
    x = 67,701.19

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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.