Home / 65,719.20-90,678.96-38,862.48

Finding the Fourth Proportional to 65,719.20, 90,678.96 and 38,862.48

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Solution

The fourth proportional to 65,719.20, 90,678.96 and 38,862.48 is: 53,622.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,719.20 : 90,678.96 = 38,862.48 : x
  2. Step 2: Convert to fraction form
    65,719.20/90,678.96 = 38,862.48/x
  3. Step 3: Cross multiply
    65,719.20x = 90,678.96 × 38,862.48
  4. Step 4: Simplify right side
    65,719.20x = 3,524,009,269.42
  5. Step 5: Solve for x
    x = 3,524,009,269.42/65,719.20
  6. Step 6: Final answer
    x = 53,622.22

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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.