Home / 45,221.55-67,831.51-18,561.75

Finding the Fourth Proportional to 45,221.55, 67,831.51 and 18,561.75

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Solution

The fourth proportional to 45,221.55, 67,831.51 and 18,561.75 is: 27,842.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,221.55 : 67,831.51 = 18,561.75 : x
  2. Step 2: Convert to fraction form
    45,221.55/67,831.51 = 18,561.75/x
  3. Step 3: Cross multiply
    45,221.55x = 67,831.51 × 18,561.75
  4. Step 4: Simplify right side
    45,221.55x = 1,259,071,264.77
  5. Step 5: Solve for x
    x = 1,259,071,264.77/45,221.55
  6. Step 6: Final answer
    x = 27,842.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.