Home / 80,943.54-111,702.45-45,135.06

Finding the Fourth Proportional to 80,943.54, 111,702.45 and 45,135.06

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Solution

The fourth proportional to 80,943.54, 111,702.45 and 45,135.06 is: 62,286.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,943.54 : 111,702.45 = 45,135.06 : x
  2. Step 2: Convert to fraction form
    80,943.54/111,702.45 = 45,135.06/x
  3. Step 3: Cross multiply
    80,943.54x = 111,702.45 × 45,135.06
  4. Step 4: Simplify right side
    80,943.54x = 5,041,696,782.90
  5. Step 5: Solve for x
    x = 5,041,696,782.90/80,943.54
  6. Step 6: Final answer
    x = 62,286.59

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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.