Home / 85,931.77-118,600.09-50,121.78

Finding the Fourth Proportional to 85,931.77, 118,600.09 and 50,121.78

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Solution

The fourth proportional to 85,931.77, 118,600.09 and 50,121.78 is: 69,176.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,931.77 : 118,600.09 = 50,121.78 : x
  2. Step 2: Convert to fraction form
    85,931.77/118,600.09 = 50,121.78/x
  3. Step 3: Cross multiply
    85,931.77x = 118,600.09 × 50,121.78
  4. Step 4: Simplify right side
    85,931.77x = 5,944,447,618.96
  5. Step 5: Solve for x
    x = 5,944,447,618.96/85,931.77
  6. Step 6: Final answer
    x = 69,176.37

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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.