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Finding the Fourth Proportional to 61,819.70, 92,717.40 and 20,266.70

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Solution

The fourth proportional to 61,819.70, 92,717.40 and 20,266.70 is: 30,396.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,819.70 : 92,717.40 = 20,266.70 : x
  2. Step 2: Convert to fraction form
    61,819.70/92,717.40 = 20,266.70/x
  3. Step 3: Cross multiply
    61,819.70x = 92,717.40 × 20,266.70
  4. Step 4: Simplify right side
    61,819.70x = 1,879,075,730.58
  5. Step 5: Solve for x
    x = 1,879,075,730.58/61,819.70
  6. Step 6: Final answer
    x = 30,396.07

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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.