Home / 78,375.81-108,096.08-51,545.87

Finding the Fourth Proportional to 78,375.81, 108,096.08 and 51,545.87

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Solution

The fourth proportional to 78,375.81, 108,096.08 and 51,545.87 is: 71,092.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375.81 : 108,096.08 = 51,545.87 : x
  2. Step 2: Convert to fraction form
    78,375.81/108,096.08 = 51,545.87/x
  3. Step 3: Cross multiply
    78,375.81x = 108,096.08 × 51,545.87
  4. Step 4: Simplify right side
    78,375.81x = 5,571,905,688.98
  5. Step 5: Solve for x
    x = 5,571,905,688.98/78,375.81
  6. Step 6: Final answer
    x = 71,092.16

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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.