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Finding the Fourth Proportional to 61,618, 92,434.30 and 20,065

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Solution

The fourth proportional to 61,618, 92,434.30 and 20,065 is: 30,099.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,618 : 92,434.30 = 20,065 : x
  2. Step 2: Convert to fraction form
    61,618/92,434.30 = 20,065/x
  3. Step 3: Cross multiply
    61,618x = 92,434.30 × 20,065
  4. Step 4: Simplify right side
    61,618x = 1,854,694,229.50
  5. Step 5: Solve for x
    x = 1,854,694,229.50/61,618
  6. Step 6: Final answer
    x = 30,099.88

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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.