Home / 87,902.45-121,305.38-47,616.20

Finding the Fourth Proportional to 87,902.45, 121,305.38 and 47,616.20

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Solution

The fourth proportional to 87,902.45, 121,305.38 and 47,616.20 is: 65,710.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,902.45 : 121,305.38 = 47,616.20 : x
  2. Step 2: Convert to fraction form
    87,902.45/121,305.38 = 47,616.20/x
  3. Step 3: Cross multiply
    87,902.45x = 121,305.38 × 47,616.20
  4. Step 4: Simplify right side
    87,902.45x = 5,776,101,527.79
  5. Step 5: Solve for x
    x = 5,776,101,527.79/87,902.45
  6. Step 6: Final answer
    x = 65,710.36

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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.