Home / 85,002.75-127,509.39-25,842.78

Finding the Fourth Proportional to 85,002.75, 127,509.39 and 25,842.78

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Solution

The fourth proportional to 85,002.75, 127,509.39 and 25,842.78 is: 38,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,002.75 : 127,509.39 = 25,842.78 : x
  2. Step 2: Convert to fraction form
    85,002.75/127,509.39 = 25,842.78/x
  3. Step 3: Cross multiply
    85,002.75x = 127,509.39 × 25,842.78
  4. Step 4: Simplify right side
    85,002.75x = 3,295,197,113.70
  5. Step 5: Solve for x
    x = 3,295,197,113.70/85,002.75
  6. Step 6: Final answer
    x = 38,765.77

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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.