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Finding the Fourth Proportional to 52,801.76, 79,193.02 and 21,210.54

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Solution

The fourth proportional to 52,801.76, 79,193.02 and 21,210.54 is: 31,811.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,801.76 : 79,193.02 = 21,210.54 : x
  2. Step 2: Convert to fraction form
    52,801.76/79,193.02 = 21,210.54/x
  3. Step 3: Cross multiply
    52,801.76x = 79,193.02 × 21,210.54
  4. Step 4: Simplify right side
    52,801.76x = 1,679,726,718.43
  5. Step 5: Solve for x
    x = 1,679,726,718.43/52,801.76
  6. Step 6: Final answer
    x = 31,811.95

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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.