Home / 89,008.88-122,821.39-70,905.71

Finding the Fourth Proportional to 89,008.88, 122,821.39 and 70,905.71

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Solution

The fourth proportional to 89,008.88, 122,821.39 and 70,905.71 is: 97,841.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,008.88 : 122,821.39 = 70,905.71 : x
  2. Step 2: Convert to fraction form
    89,008.88/122,821.39 = 70,905.71/x
  3. Step 3: Cross multiply
    89,008.88x = 122,821.39 × 70,905.71
  4. Step 4: Simplify right side
    89,008.88x = 8,708,737,861.14
  5. Step 5: Solve for x
    x = 8,708,737,861.14/89,008.88
  6. Step 6: Final answer
    x = 97,841.23

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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.