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Finding the Fourth Proportional to 66,199.84, 99,243.75 and 28,731.57

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Solution

The fourth proportional to 66,199.84, 99,243.75 and 28,731.57 is: 43,073.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,199.84 : 99,243.75 = 28,731.57 : x
  2. Step 2: Convert to fraction form
    66,199.84/99,243.75 = 28,731.57/x
  3. Step 3: Cross multiply
    66,199.84x = 99,243.75 × 28,731.57
  4. Step 4: Simplify right side
    66,199.84x = 2,851,428,750.19
  5. Step 5: Solve for x
    x = 2,851,428,750.19/66,199.84
  6. Step 6: Final answer
    x = 43,073.05

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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.