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Finding the Fourth Proportional to 90,603.30, 135,851.76 and 27,404.40

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Solution

The fourth proportional to 90,603.30, 135,851.76 and 27,404.40 is: 41,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,603.30 : 135,851.76 = 27,404.40 : x
  2. Step 2: Convert to fraction form
    90,603.30/135,851.76 = 27,404.40/x
  3. Step 3: Cross multiply
    90,603.30x = 135,851.76 × 27,404.40
  4. Step 4: Simplify right side
    90,603.30x = 3,722,935,971.74
  5. Step 5: Solve for x
    x = 3,722,935,971.74/90,603.30
  6. Step 6: Final answer
    x = 41,090.51

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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.