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Finding the Fourth Proportional to 75,328.98, 112,914.62 and 25,391.81

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Solution

The fourth proportional to 75,328.98, 112,914.62 and 25,391.81 is: 38,061.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,328.98 : 112,914.62 = 25,391.81 : x
  2. Step 2: Convert to fraction form
    75,328.98/112,914.62 = 25,391.81/x
  3. Step 3: Cross multiply
    75,328.98x = 112,914.62 × 25,391.81
  4. Step 4: Simplify right side
    75,328.98x = 2,867,105,885.73
  5. Step 5: Solve for x
    x = 2,867,105,885.73/75,328.98
  6. Step 6: Final answer
    x = 38,061.13

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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.