Home / 72,371.29-99,872.39-40,540.87

Finding the Fourth Proportional to 72,371.29, 99,872.39 and 40,540.87

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Solution

The fourth proportional to 72,371.29, 99,872.39 and 40,540.87 is: 55,946.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,371.29 : 99,872.39 = 40,540.87 : x
  2. Step 2: Convert to fraction form
    72,371.29/99,872.39 = 40,540.87/x
  3. Step 3: Cross multiply
    72,371.29x = 99,872.39 × 40,540.87
  4. Step 4: Simplify right side
    72,371.29x = 4,048,913,384.44
  5. Step 5: Solve for x
    x = 4,048,913,384.44/72,371.29
  6. Step 6: Final answer
    x = 55,946.41

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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.