Home / 65,329.30-90,161.13-38,480.26

Finding the Fourth Proportional to 65,329.30, 90,161.13 and 38,480.26

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Solution

The fourth proportional to 65,329.30, 90,161.13 and 38,480.26 is: 53,106.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,329.30 : 90,161.13 = 38,480.26 : x
  2. Step 2: Convert to fraction form
    65,329.30/90,161.13 = 38,480.26/x
  3. Step 3: Cross multiply
    65,329.30x = 90,161.13 × 38,480.26
  4. Step 4: Simplify right side
    65,329.30x = 3,469,423,724.29
  5. Step 5: Solve for x
    x = 3,469,423,724.29/65,329.30
  6. Step 6: Final answer
    x = 53,106.70

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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.