Home / 40,146.36-60,256.50-20,439

Finding the Fourth Proportional to 40,146.36, 60,256.50 and 20,439

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Solution

The fourth proportional to 40,146.36, 60,256.50 and 20,439 is: 30,677.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,146.36 : 60,256.50 = 20,439 : x
  2. Step 2: Convert to fraction form
    40,146.36/60,256.50 = 20,439/x
  3. Step 3: Cross multiply
    40,146.36x = 60,256.50 × 20,439
  4. Step 4: Simplify right side
    40,146.36x = 1,231,582,603.50
  5. Step 5: Solve for x
    x = 1,231,582,603.50/40,146.36
  6. Step 6: Final answer
    x = 30,677.32

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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.