Home / 102,809.28-154,228.36-31,737.72

Finding the Fourth Proportional to 102,809.28, 154,228.36 and 31,737.72

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Solution

The fourth proportional to 102,809.28, 154,228.36 and 31,737.72 is: 47,611.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,809.28 : 154,228.36 = 31,737.72 : x
  2. Step 2: Convert to fraction form
    102,809.28/154,228.36 = 31,737.72/x
  3. Step 3: Cross multiply
    102,809.28x = 154,228.36 × 31,737.72
  4. Step 4: Simplify right side
    102,809.28x = 4,894,856,505.74
  5. Step 5: Solve for x
    x = 4,894,856,505.74/102,809.28
  6. Step 6: Final answer
    x = 47,611.04

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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.