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Finding the Fourth Proportional to 90,072, 135,108 and 24,408

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Solution

The fourth proportional to 90,072, 135,108 and 24,408 is: 36,612

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,072 : 135,108 = 24,408 : x
  2. Step 2: Convert to fraction form
    90,072/135,108 = 24,408/x
  3. Step 3: Cross multiply
    90,072x = 135,108 × 24,408
  4. Step 4: Simplify right side
    90,072x = 3,297,716,064
  5. Step 5: Solve for x
    x = 3,297,716,064/90,072
  6. Step 6: Final answer
    x = 36,612

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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.