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Finding the Fourth Proportional to 90,207, 135,306.38 and 23,645.66

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Solution

The fourth proportional to 90,207, 135,306.38 and 23,645.66 is: 35,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,207 : 135,306.38 = 23,645.66 : x
  2. Step 2: Convert to fraction form
    90,207/135,306.38 = 23,645.66/x
  3. Step 3: Cross multiply
    90,207x = 135,306.38 × 23,645.66
  4. Step 4: Simplify right side
    90,207x = 3,199,408,039.89
  5. Step 5: Solve for x
    x = 3,199,408,039.89/90,207
  6. Step 6: Final answer
    x = 35,467.40

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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.