Home / 40,138.29-55,397.70-23,139.54

Finding the Fourth Proportional to 40,138.29, 55,397.70 and 23,139.54

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Solution

The fourth proportional to 40,138.29, 55,397.70 and 23,139.54 is: 31,936.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.29 : 55,397.70 = 23,139.54 : x
  2. Step 2: Convert to fraction form
    40,138.29/55,397.70 = 23,139.54/x
  3. Step 3: Cross multiply
    40,138.29x = 55,397.70 × 23,139.54
  4. Step 4: Simplify right side
    40,138.29x = 1,281,877,295.06
  5. Step 5: Solve for x
    x = 1,281,877,295.06/40,138.29
  6. Step 6: Final answer
    x = 31,936.52

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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.