Home / 57,154.91-78,872.93-31,661.20

Finding the Fourth Proportional to 57,154.91, 78,872.93 and 31,661.20

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Solution

The fourth proportional to 57,154.91, 78,872.93 and 31,661.20 is: 43,691.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.91 : 78,872.93 = 31,661.20 : x
  2. Step 2: Convert to fraction form
    57,154.91/78,872.93 = 31,661.20/x
  3. Step 3: Cross multiply
    57,154.91x = 78,872.93 × 31,661.20
  4. Step 4: Simplify right side
    57,154.91x = 2,497,211,551.60
  5. Step 5: Solve for x
    x = 2,497,211,551.60/57,154.91
  6. Step 6: Final answer
    x = 43,691.98

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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.