Home / 55,278.60-82,856.28-21,989.76

Finding the Fourth Proportional to 55,278.60, 82,856.28 and 21,989.76

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Solution

The fourth proportional to 55,278.60, 82,856.28 and 21,989.76 is: 32,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.60 : 82,856.28 = 21,989.76 : x
  2. Step 2: Convert to fraction form
    55,278.60/82,856.28 = 21,989.76/x
  3. Step 3: Cross multiply
    55,278.60x = 82,856.28 × 21,989.76
  4. Step 4: Simplify right side
    55,278.60x = 1,821,989,711.69
  5. Step 5: Solve for x
    x = 1,821,989,711.69/55,278.60
  6. Step 6: Final answer
    x = 32,960.13

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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.