Home / 79,381.92-109,545.24-51,087.60

Finding the Fourth Proportional to 79,381.92, 109,545.24 and 51,087.60

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Solution

The fourth proportional to 79,381.92, 109,545.24 and 51,087.60 is: 70,499.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,381.92 : 109,545.24 = 51,087.60 : x
  2. Step 2: Convert to fraction form
    79,381.92/109,545.24 = 51,087.60/x
  3. Step 3: Cross multiply
    79,381.92x = 109,545.24 × 51,087.60
  4. Step 4: Simplify right side
    79,381.92x = 5,596,403,403.02
  5. Step 5: Solve for x
    x = 5,596,403,403.02/79,381.92
  6. Step 6: Final answer
    x = 70,499.72

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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.