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Finding the Fourth Proportional to 73,120.80, 109,724.40 and 48,232.80

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Solution

The fourth proportional to 73,120.80, 109,724.40 and 48,232.80 is: 72,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,120.80 : 109,724.40 = 48,232.80 : x
  2. Step 2: Convert to fraction form
    73,120.80/109,724.40 = 48,232.80/x
  3. Step 3: Cross multiply
    73,120.80x = 109,724.40 × 48,232.80
  4. Step 4: Simplify right side
    73,120.80x = 5,292,315,040.32
  5. Step 5: Solve for x
    x = 5,292,315,040.32/73,120.80
  6. Step 6: Final answer
    x = 72,377.70

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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.