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Finding the Fourth Proportional to 60,045.40, 89,960.10 and 28,811.80

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Solution

The fourth proportional to 60,045.40, 89,960.10 and 28,811.80 is: 43,165.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,045.40 : 89,960.10 = 28,811.80 : x
  2. Step 2: Convert to fraction form
    60,045.40/89,960.10 = 28,811.80/x
  3. Step 3: Cross multiply
    60,045.40x = 89,960.10 × 28,811.80
  4. Step 4: Simplify right side
    60,045.40x = 2,591,912,409.18
  5. Step 5: Solve for x
    x = 2,591,912,409.18/60,045.40
  6. Step 6: Final answer
    x = 43,165.88

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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.