Home / 89,123.47-122,990.39-48,287.66

Finding the Fourth Proportional to 89,123.47, 122,990.39 and 48,287.66

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Solution

The fourth proportional to 89,123.47, 122,990.39 and 48,287.66 is: 66,636.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,123.47 : 122,990.39 = 48,287.66 : x
  2. Step 2: Convert to fraction form
    89,123.47/122,990.39 = 48,287.66/x
  3. Step 3: Cross multiply
    89,123.47x = 122,990.39 × 48,287.66
  4. Step 4: Simplify right side
    89,123.47x = 5,938,917,641.35
  5. Step 5: Solve for x
    x = 5,938,917,641.35/89,123.47
  6. Step 6: Final answer
    x = 66,636.97

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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.