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Finding the Fourth Proportional to 35,443.40, 53,134.90 and 15,711.20

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Solution

The fourth proportional to 35,443.40, 53,134.90 and 15,711.20 is: 23,553.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,443.40 : 53,134.90 = 15,711.20 : x
  2. Step 2: Convert to fraction form
    35,443.40/53,134.90 = 15,711.20/x
  3. Step 3: Cross multiply
    35,443.40x = 53,134.90 × 15,711.20
  4. Step 4: Simplify right side
    35,443.40x = 834,813,040.88
  5. Step 5: Solve for x
    x = 834,813,040.88/35,443.40
  6. Step 6: Final answer
    x = 23,553.41

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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.