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Finding the Fourth Proportional to 77,350.80, 115,872.60 and 42,227.60

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Solution

The fourth proportional to 77,350.80, 115,872.60 and 42,227.60 is: 63,257.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,350.80 : 115,872.60 = 42,227.60 : x
  2. Step 2: Convert to fraction form
    77,350.80/115,872.60 = 42,227.60/x
  3. Step 3: Cross multiply
    77,350.80x = 115,872.60 × 42,227.60
  4. Step 4: Simplify right side
    77,350.80x = 4,893,021,803.76
  5. Step 5: Solve for x
    x = 4,893,021,803.76/77,350.80
  6. Step 6: Final answer
    x = 63,257.55

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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.