Home / 78,049.28-107,760.76-51,237.38

Finding the Fourth Proportional to 78,049.28, 107,760.76 and 51,237.38

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Solution

The fourth proportional to 78,049.28, 107,760.76 and 51,237.38 is: 70,742.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,049.28 : 107,760.76 = 51,237.38 : x
  2. Step 2: Convert to fraction form
    78,049.28/107,760.76 = 51,237.38/x
  3. Step 3: Cross multiply
    78,049.28x = 107,760.76 × 51,237.38
  4. Step 4: Simplify right side
    78,049.28x = 5,521,379,009.21
  5. Step 5: Solve for x
    x = 5,521,379,009.21/78,049.28
  6. Step 6: Final answer
    x = 70,742.22

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1.5x scale

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.