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Finding the Fourth Proportional to 66,387.88, 99,596.58 and 28,954

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Solution

The fourth proportional to 66,387.88, 99,596.58 and 28,954 is: 43,437.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,387.88 : 99,596.58 = 28,954 : x
  2. Step 2: Convert to fraction form
    66,387.88/99,596.58 = 28,954/x
  3. Step 3: Cross multiply
    66,387.88x = 99,596.58 × 28,954
  4. Step 4: Simplify right side
    66,387.88x = 2,883,719,377.32
  5. Step 5: Solve for x
    x = 2,883,719,377.32/66,387.88
  6. Step 6: Final answer
    x = 43,437.44

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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.