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Finding the Fourth Proportional to 60,427.80, 90,738.90 and 43,903.80

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Solution

The fourth proportional to 60,427.80, 90,738.90 and 43,903.80 is: 65,926.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,427.80 : 90,738.90 = 43,903.80 : x
  2. Step 2: Convert to fraction form
    60,427.80/90,738.90 = 43,903.80/x
  3. Step 3: Cross multiply
    60,427.80x = 90,738.90 × 43,903.80
  4. Step 4: Simplify right side
    60,427.80x = 3,983,782,517.82
  5. Step 5: Solve for x
    x = 3,983,782,517.82/60,427.80
  6. Step 6: Final answer
    x = 65,926.32

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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.