Home / 80,787.50-111,495.40-47,281.58

Finding the Fourth Proportional to 80,787.50, 111,495.40 and 47,281.58

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Solution

The fourth proportional to 80,787.50, 111,495.40 and 47,281.58 is: 65,253.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,787.50 : 111,495.40 = 47,281.58 : x
  2. Step 2: Convert to fraction form
    80,787.50/111,495.40 = 47,281.58/x
  3. Step 3: Cross multiply
    80,787.50x = 111,495.40 × 47,281.58
  4. Step 4: Simplify right side
    80,787.50x = 5,271,678,674.73
  5. Step 5: Solve for x
    x = 5,271,678,674.73/80,787.50
  6. Step 6: Final answer
    x = 65,253.64

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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.