Home / 74,787.20-103,204.53-42,958.15

Finding the Fourth Proportional to 74,787.20, 103,204.53 and 42,958.15

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Solution

The fourth proportional to 74,787.20, 103,204.53 and 42,958.15 is: 59,281.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,787.20 : 103,204.53 = 42,958.15 : x
  2. Step 2: Convert to fraction form
    74,787.20/103,204.53 = 42,958.15/x
  3. Step 3: Cross multiply
    74,787.20x = 103,204.53 × 42,958.15
  4. Step 4: Simplify right side
    74,787.20x = 4,433,475,422.41
  5. Step 5: Solve for x
    x = 4,433,475,422.41/74,787.20
  6. Step 6: Final answer
    x = 59,281.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.