Home / 78,299.28-117,470.70-25,745.58

Finding the Fourth Proportional to 78,299.28, 117,470.70 and 25,745.58

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Solution

The fourth proportional to 78,299.28, 117,470.70 and 25,745.58 is: 38,625.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,299.28 : 117,470.70 = 25,745.58 : x
  2. Step 2: Convert to fraction form
    78,299.28/117,470.70 = 25,745.58/x
  3. Step 3: Cross multiply
    78,299.28x = 117,470.70 × 25,745.58
  4. Step 4: Simplify right side
    78,299.28x = 3,024,351,304.51
  5. Step 5: Solve for x
    x = 3,024,351,304.51/78,299.28
  6. Step 6: Final answer
    x = 38,625.53

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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.