Home / 40,641.53-60,917.81-20,921.18

Finding the Fourth Proportional to 40,641.53, 60,917.81 and 20,921.18

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Solution

The fourth proportional to 40,641.53, 60,917.81 and 20,921.18 is: 31,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,641.53 : 60,917.81 = 20,921.18 : x
  2. Step 2: Convert to fraction form
    40,641.53/60,917.81 = 20,921.18/x
  3. Step 3: Cross multiply
    40,641.53x = 60,917.81 × 20,921.18
  4. Step 4: Simplify right side
    40,641.53x = 1,274,472,059.02
  5. Step 5: Solve for x
    x = 1,274,472,059.02/40,641.53
  6. Step 6: Final answer
    x = 31,358.86

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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.