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Finding the Fourth Proportional to 74,696.57, 112,040.70 and 30,327.81

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Solution

The fourth proportional to 74,696.57, 112,040.70 and 30,327.81 is: 45,490.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,696.57 : 112,040.70 = 30,327.81 : x
  2. Step 2: Convert to fraction form
    74,696.57/112,040.70 = 30,327.81/x
  3. Step 3: Cross multiply
    74,696.57x = 112,040.70 × 30,327.81
  4. Step 4: Simplify right side
    74,696.57x = 3,397,948,501.66
  5. Step 5: Solve for x
    x = 3,397,948,501.66/74,696.57
  6. Step 6: Final answer
    x = 45,490.02

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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.