Home / 74,419.68-111,635.28-21,110.76

Finding the Fourth Proportional to 74,419.68, 111,635.28 and 21,110.76

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Solution

The fourth proportional to 74,419.68, 111,635.28 and 21,110.76 is: 31,667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,419.68 : 111,635.28 = 21,110.76 : x
  2. Step 2: Convert to fraction form
    74,419.68/111,635.28 = 21,110.76/x
  3. Step 3: Cross multiply
    74,419.68x = 111,635.28 × 21,110.76
  4. Step 4: Simplify right side
    74,419.68x = 2,356,705,603.61
  5. Step 5: Solve for x
    x = 2,356,705,603.61/74,419.68
  6. Step 6: Final answer
    x = 31,667.77

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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.