Home / 42,739.65-58,947.09-39,874.89

Finding the Fourth Proportional to 42,739.65, 58,947.09 and 39,874.89

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Solution

The fourth proportional to 42,739.65, 58,947.09 and 39,874.89 is: 54,995.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,739.65 : 58,947.09 = 39,874.89 : x
  2. Step 2: Convert to fraction form
    42,739.65/58,947.09 = 39,874.89/x
  3. Step 3: Cross multiply
    42,739.65x = 58,947.09 × 39,874.89
  4. Step 4: Simplify right side
    42,739.65x = 2,350,508,729.57
  5. Step 5: Solve for x
    x = 2,350,508,729.57/42,739.65
  6. Step 6: Final answer
    x = 54,995.98

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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.