Home / 89,170.20-133,722.90-30,007.80

Finding the Fourth Proportional to 89,170.20, 133,722.90 and 30,007.80

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Solution

The fourth proportional to 89,170.20, 133,722.90 and 30,007.80 is: 45,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,170.20 : 133,722.90 = 30,007.80 : x
  2. Step 2: Convert to fraction form
    89,170.20/133,722.90 = 30,007.80/x
  3. Step 3: Cross multiply
    89,170.20x = 133,722.90 × 30,007.80
  4. Step 4: Simplify right side
    89,170.20x = 4,012,730,038.62
  5. Step 5: Solve for x
    x = 4,012,730,038.62/89,170.20
  6. Step 6: Final answer
    x = 45,000.80

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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.