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Finding the Fourth Proportional to 87,585.75, 120,868.33 and 47,299.51

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Solution

The fourth proportional to 87,585.75, 120,868.33 and 47,299.51 is: 65,273.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,585.75 : 120,868.33 = 47,299.51 : x
  2. Step 2: Convert to fraction form
    87,585.75/120,868.33 = 47,299.51/x
  3. Step 3: Cross multiply
    87,585.75x = 120,868.33 × 47,299.51
  4. Step 4: Simplify right side
    87,585.75x = 5,717,012,363.10
  5. Step 5: Solve for x
    x = 5,717,012,363.10/87,585.75
  6. Step 6: Final answer
    x = 65,273.32

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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.