Home / 85,078.10-127,612.49-25,908.81

Finding the Fourth Proportional to 85,078.10, 127,612.49 and 25,908.81

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Solution

The fourth proportional to 85,078.10, 127,612.49 and 25,908.81 is: 38,861.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,078.10 : 127,612.49 = 25,908.81 : x
  2. Step 2: Convert to fraction form
    85,078.10/127,612.49 = 25,908.81/x
  3. Step 3: Cross multiply
    85,078.10x = 127,612.49 × 25,908.81
  4. Step 4: Simplify right side
    85,078.10x = 3,306,287,627.49
  5. Step 5: Solve for x
    x = 3,306,287,627.49/85,078.10
  6. Step 6: Final answer
    x = 38,861.80

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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.