Home / 85,125.13-117,433.19-54,920.16

Finding the Fourth Proportional to 85,125.13, 117,433.19 and 54,920.16

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Solution

The fourth proportional to 85,125.13, 117,433.19 and 54,920.16 is: 75,764.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,125.13 : 117,433.19 = 54,920.16 : x
  2. Step 2: Convert to fraction form
    85,125.13/117,433.19 = 54,920.16/x
  3. Step 3: Cross multiply
    85,125.13x = 117,433.19 × 54,920.16
  4. Step 4: Simplify right side
    85,125.13x = 6,449,449,721.41
  5. Step 5: Solve for x
    x = 6,449,449,721.41/85,125.13
  6. Step 6: Final answer
    x = 75,764.35

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1.5x scale

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.