Home / 57,079.13-78,769.19-31,928.63

Finding the Fourth Proportional to 57,079.13, 78,769.19 and 31,928.63

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Solution

The fourth proportional to 57,079.13, 78,769.19 and 31,928.63 is: 44,061.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,079.13 : 78,769.19 = 31,928.63 : x
  2. Step 2: Convert to fraction form
    57,079.13/78,769.19 = 31,928.63/x
  3. Step 3: Cross multiply
    57,079.13x = 78,769.19 × 31,928.63
  4. Step 4: Simplify right side
    57,079.13x = 2,514,992,008.89
  5. Step 5: Solve for x
    x = 2,514,992,008.89/57,079.13
  6. Step 6: Final answer
    x = 44,061.50

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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.