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Finding the Fourth Proportional to 75,925, 113,787.42 and 66,017.08

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Solution

The fourth proportional to 75,925, 113,787.42 and 66,017.08 is: 98,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,925 : 113,787.42 = 66,017.08 : x
  2. Step 2: Convert to fraction form
    75,925/113,787.42 = 66,017.08/x
  3. Step 3: Cross multiply
    75,925x = 113,787.42 × 66,017.08
  4. Step 4: Simplify right side
    75,925x = 7,511,913,209.13
  5. Step 5: Solve for x
    x = 7,511,913,209.13/75,925
  6. Step 6: Final answer
    x = 98,938.60

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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.