Home / 57,890.30-86,825.12-31,223.88

Finding the Fourth Proportional to 57,890.30, 86,825.12 and 31,223.88

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Solution

The fourth proportional to 57,890.30, 86,825.12 and 31,223.88 is: 46,830.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,890.30 : 86,825.12 = 31,223.88 : x
  2. Step 2: Convert to fraction form
    57,890.30/86,825.12 = 31,223.88/x
  3. Step 3: Cross multiply
    57,890.30x = 86,825.12 × 31,223.88
  4. Step 4: Simplify right side
    57,890.30x = 2,711,016,971.75
  5. Step 5: Solve for x
    x = 2,711,016,971.75/57,890.30
  6. Step 6: Final answer
    x = 46,830.25

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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.