Home / 57,400.45-85,916.50-30,679.76

Finding the Fourth Proportional to 57,400.45, 85,916.50 and 30,679.76

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Solution

The fourth proportional to 57,400.45, 85,916.50 and 30,679.76 is: 45,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,400.45 : 85,916.50 = 30,679.76 : x
  2. Step 2: Convert to fraction form
    57,400.45/85,916.50 = 30,679.76/x
  3. Step 3: Cross multiply
    57,400.45x = 85,916.50 × 30,679.76
  4. Step 4: Simplify right side
    57,400.45x = 2,635,897,738.13
  5. Step 5: Solve for x
    x = 2,635,897,738.13/57,400.45
  6. Step 6: Final answer
    x = 45,921.21

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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.