Home / 89,211.20-133,663.20-47,028.80

Finding the Fourth Proportional to 89,211.20, 133,663.20 and 47,028.80

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Solution

The fourth proportional to 89,211.20, 133,663.20 and 47,028.80 is: 70,462.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,211.20 : 133,663.20 = 47,028.80 : x
  2. Step 2: Convert to fraction form
    89,211.20/133,663.20 = 47,028.80/x
  3. Step 3: Cross multiply
    89,211.20x = 133,663.20 × 47,028.80
  4. Step 4: Simplify right side
    89,211.20x = 6,286,019,900.16
  5. Step 5: Solve for x
    x = 6,286,019,900.16/89,211.20
  6. Step 6: Final answer
    x = 70,462.23

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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.