Home / 57,156.50-85,740.38-19,711.67

Finding the Fourth Proportional to 57,156.50, 85,740.38 and 19,711.67

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Solution

The fourth proportional to 57,156.50, 85,740.38 and 19,711.67 is: 29,569.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,156.50 : 85,740.38 = 19,711.67 : x
  2. Step 2: Convert to fraction form
    57,156.50/85,740.38 = 19,711.67/x
  3. Step 3: Cross multiply
    57,156.50x = 85,740.38 × 19,711.67
  4. Step 4: Simplify right side
    57,156.50x = 1,690,085,548.97
  5. Step 5: Solve for x
    x = 1,690,085,548.97/57,156.50
  6. Step 6: Final answer
    x = 29,569.44

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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.