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Finding the Fourth Proportional to 66,065.54, 99,113.44 and 28,631.90

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Solution

The fourth proportional to 66,065.54, 99,113.44 and 28,631.90 is: 42,954.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,065.54 : 99,113.44 = 28,631.90 : x
  2. Step 2: Convert to fraction form
    66,065.54/99,113.44 = 28,631.90/x
  3. Step 3: Cross multiply
    66,065.54x = 99,113.44 × 28,631.90
  4. Step 4: Simplify right side
    66,065.54x = 2,837,806,102.74
  5. Step 5: Solve for x
    x = 2,837,806,102.74/66,065.54
  6. Step 6: Final answer
    x = 42,954.41

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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.