Home / 57,002.25-78,661.72-31,159.65

Finding the Fourth Proportional to 57,002.25, 78,661.72 and 31,159.65

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Solution

The fourth proportional to 57,002.25, 78,661.72 and 31,159.65 is: 42,999.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,002.25 : 78,661.72 = 31,159.65 : x
  2. Step 2: Convert to fraction form
    57,002.25/78,661.72 = 31,159.65/x
  3. Step 3: Cross multiply
    57,002.25x = 78,661.72 × 31,159.65
  4. Step 4: Simplify right side
    57,002.25x = 2,451,071,663.60
  5. Step 5: Solve for x
    x = 2,451,071,663.60/57,002.25
  6. Step 6: Final answer
    x = 42,999.56

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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.