Home / 48,491.39-72,737.09-13,431.05

Finding the Fourth Proportional to 48,491.39, 72,737.09 and 13,431.05

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Solution

The fourth proportional to 48,491.39, 72,737.09 and 13,431.05 is: 20,146.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,491.39 : 72,737.09 = 13,431.05 : x
  2. Step 2: Convert to fraction form
    48,491.39/72,737.09 = 13,431.05/x
  3. Step 3: Cross multiply
    48,491.39x = 72,737.09 × 13,431.05
  4. Step 4: Simplify right side
    48,491.39x = 976,935,061.80
  5. Step 5: Solve for x
    x = 976,935,061.80/48,491.39
  6. Step 6: Final answer
    x = 20,146.57

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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.