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Finding the Fourth Proportional to 62,479.20, 93,718.80 and 20,926.20

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Solution

The fourth proportional to 62,479.20, 93,718.80 and 20,926.20 is: 31,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,479.20 : 93,718.80 = 20,926.20 : x
  2. Step 2: Convert to fraction form
    62,479.20/93,718.80 = 20,926.20/x
  3. Step 3: Cross multiply
    62,479.20x = 93,718.80 × 20,926.20
  4. Step 4: Simplify right side
    62,479.20x = 1,961,178,352.56
  5. Step 5: Solve for x
    x = 1,961,178,352.56/62,479.20
  6. Step 6: Final answer
    x = 31,389.30

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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.