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Finding the Fourth Proportional to 84,737.80, 127,106.70 and 38,081.80

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Solution

The fourth proportional to 84,737.80, 127,106.70 and 38,081.80 is: 57,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,737.80 : 127,106.70 = 38,081.80 : x
  2. Step 2: Convert to fraction form
    84,737.80/127,106.70 = 38,081.80/x
  3. Step 3: Cross multiply
    84,737.80x = 127,106.70 × 38,081.80
  4. Step 4: Simplify right side
    84,737.80x = 4,840,451,928.06
  5. Step 5: Solve for x
    x = 4,840,451,928.06/84,737.80
  6. Step 6: Final answer
    x = 57,122.70

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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.