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Finding the Fourth Proportional to 74,244.70, 111,372.54 and 21,655.54

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Solution

The fourth proportional to 74,244.70, 111,372.54 and 21,655.54 is: 32,484.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,244.70 : 111,372.54 = 21,655.54 : x
  2. Step 2: Convert to fraction form
    74,244.70/111,372.54 = 21,655.54/x
  3. Step 3: Cross multiply
    74,244.70x = 111,372.54 × 21,655.54
  4. Step 4: Simplify right side
    74,244.70x = 2,411,832,494.87
  5. Step 5: Solve for x
    x = 2,411,832,494.87/74,244.70
  6. Step 6: Final answer
    x = 32,484.91

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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.