Home / 57,391.31-79,164.27-39,455.18

Finding the Fourth Proportional to 57,391.31, 79,164.27 and 39,455.18

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Solution

The fourth proportional to 57,391.31, 79,164.27 and 39,455.18 is: 54,423.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,391.31 : 79,164.27 = 39,455.18 : x
  2. Step 2: Convert to fraction form
    57,391.31/79,164.27 = 39,455.18/x
  3. Step 3: Cross multiply
    57,391.31x = 79,164.27 × 39,455.18
  4. Step 4: Simplify right side
    57,391.31x = 3,123,440,423.46
  5. Step 5: Solve for x
    x = 3,123,440,423.46/57,391.31
  6. Step 6: Final answer
    x = 54,423.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.