Home / 65,385.23-90,230.78-38,528.87

Finding the Fourth Proportional to 65,385.23, 90,230.78 and 38,528.87

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Solution

The fourth proportional to 65,385.23, 90,230.78 and 38,528.87 is: 53,169.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,385.23 : 90,230.78 = 38,528.87 : x
  2. Step 2: Convert to fraction form
    65,385.23/90,230.78 = 38,528.87/x
  3. Step 3: Cross multiply
    65,385.23x = 90,230.78 × 38,528.87
  4. Step 4: Simplify right side
    65,385.23x = 3,476,489,799.97
  5. Step 5: Solve for x
    x = 3,476,489,799.97/65,385.23
  6. Step 6: Final answer
    x = 53,169.34

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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.