Home / 101,787.85-140,467.11-56,472.70

Finding the Fourth Proportional to 101,787.85, 140,467.11 and 56,472.70

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Solution

The fourth proportional to 101,787.85, 140,467.11 and 56,472.70 is: 77,932.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,787.85 : 140,467.11 = 56,472.70 : x
  2. Step 2: Convert to fraction form
    101,787.85/140,467.11 = 56,472.70/x
  3. Step 3: Cross multiply
    101,787.85x = 140,467.11 × 56,472.70
  4. Step 4: Simplify right side
    101,787.85x = 7,932,556,962.90
  5. Step 5: Solve for x
    x = 7,932,556,962.90/101,787.85
  6. Step 6: Final answer
    x = 77,932.26

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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.