Home / 55,381.17-83,115.48-20,330.85

Finding the Fourth Proportional to 55,381.17, 83,115.48 and 20,330.85

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Solution

The fourth proportional to 55,381.17, 83,115.48 and 20,330.85 is: 30,512.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,381.17 : 83,115.48 = 20,330.85 : x
  2. Step 2: Convert to fraction form
    55,381.17/83,115.48 = 20,330.85/x
  3. Step 3: Cross multiply
    55,381.17x = 83,115.48 × 20,330.85
  4. Step 4: Simplify right side
    55,381.17x = 1,689,808,356.56
  5. Step 5: Solve for x
    x = 1,689,808,356.56/55,381.17
  6. Step 6: Final answer
    x = 30,512.33

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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.