Home / 65,218.30-90,022.63-38,359.42

Finding the Fourth Proportional to 65,218.30, 90,022.63 and 38,359.42

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Solution

The fourth proportional to 65,218.30, 90,022.63 and 38,359.42 is: 52,948.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,218.30 : 90,022.63 = 38,359.42 : x
  2. Step 2: Convert to fraction form
    65,218.30/90,022.63 = 38,359.42/x
  3. Step 3: Cross multiply
    65,218.30x = 90,022.63 × 38,359.42
  4. Step 4: Simplify right side
    65,218.30x = 3,453,215,873.67
  5. Step 5: Solve for x
    x = 3,453,215,873.67/65,218.30
  6. Step 6: Final answer
    x = 52,948.57

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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.