Home / 65,505.16-90,371.46-40,310.92

Finding the Fourth Proportional to 65,505.16, 90,371.46 and 40,310.92

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Solution

The fourth proportional to 65,505.16, 90,371.46 and 40,310.92 is: 55,613.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,505.16 : 90,371.46 = 40,310.92 : x
  2. Step 2: Convert to fraction form
    65,505.16/90,371.46 = 40,310.92/x
  3. Step 3: Cross multiply
    65,505.16x = 90,371.46 × 40,310.92
  4. Step 4: Simplify right side
    65,505.16x = 3,642,956,694.34
  5. Step 5: Solve for x
    x = 3,642,956,694.34/65,505.16
  6. Step 6: Final answer
    x = 55,613.28

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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.