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Finding the Fourth Proportional to 94,072, 141,108 and 28,408

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Solution

The fourth proportional to 94,072, 141,108 and 28,408 is: 42,612

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,072 : 141,108 = 28,408 : x
  2. Step 2: Convert to fraction form
    94,072/141,108 = 28,408/x
  3. Step 3: Cross multiply
    94,072x = 141,108 × 28,408
  4. Step 4: Simplify right side
    94,072x = 4,008,596,064
  5. Step 5: Solve for x
    x = 4,008,596,064/94,072
  6. Step 6: Final answer
    x = 42,612

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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.