Home / 53,803.28-80,672.12-20,487.76

Finding the Fourth Proportional to 53,803.28, 80,672.12 and 20,487.76

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Solution

The fourth proportional to 53,803.28, 80,672.12 and 20,487.76 is: 30,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,803.28 : 80,672.12 = 20,487.76 : x
  2. Step 2: Convert to fraction form
    53,803.28/80,672.12 = 20,487.76/x
  3. Step 3: Cross multiply
    53,803.28x = 80,672.12 × 20,487.76
  4. Step 4: Simplify right side
    53,803.28x = 1,652,791,033.25
  5. Step 5: Solve for x
    x = 1,652,791,033.25/53,803.28
  6. Step 6: Final answer
    x = 30,719.15

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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.