Home / 85,310.07-127,965.07-45,812.85

Finding the Fourth Proportional to 85,310.07, 127,965.07 and 45,812.85

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Solution

The fourth proportional to 85,310.07, 127,965.07 and 45,812.85 is: 68,719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,310.07 : 127,965.07 = 45,812.85 : x
  2. Step 2: Convert to fraction form
    85,310.07/127,965.07 = 45,812.85/x
  3. Step 3: Cross multiply
    85,310.07x = 127,965.07 × 45,812.85
  4. Step 4: Simplify right side
    85,310.07x = 5,862,444,557.15
  5. Step 5: Solve for x
    x = 5,862,444,557.15/85,310.07
  6. Step 6: Final answer
    x = 68,719.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.