Home / 75,189.72-112,787.64-42,120.48

Finding the Fourth Proportional to 75,189.72, 112,787.64 and 42,120.48

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Solution

The fourth proportional to 75,189.72, 112,787.64 and 42,120.48 is: 63,182.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,189.72 : 112,787.64 = 42,120.48 : x
  2. Step 2: Convert to fraction form
    75,189.72/112,787.64 = 42,120.48/x
  3. Step 3: Cross multiply
    75,189.72x = 112,787.64 × 42,120.48
  4. Step 4: Simplify right side
    75,189.72x = 4,750,669,534.87
  5. Step 5: Solve for x
    x = 4,750,669,534.87/75,189.72
  6. Step 6: Final answer
    x = 63,182.43

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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.