Home / 47,787.80-71,714.10-31,107.20

Finding the Fourth Proportional to 47,787.80, 71,714.10 and 31,107.20

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Solution

The fourth proportional to 47,787.80, 71,714.10 and 31,107.20 is: 46,681.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,787.80 : 71,714.10 = 31,107.20 : x
  2. Step 2: Convert to fraction form
    47,787.80/71,714.10 = 31,107.20/x
  3. Step 3: Cross multiply
    47,787.80x = 71,714.10 × 31,107.20
  4. Step 4: Simplify right side
    47,787.80x = 2,230,824,851.52
  5. Step 5: Solve for x
    x = 2,230,824,851.52/47,787.80
  6. Step 6: Final answer
    x = 46,681.89

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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.