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Finding the Fourth Proportional to 57,862.80, 86,734.98 and 19,900.67

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Solution

The fourth proportional to 57,862.80, 86,734.98 and 19,900.67 is: 29,830.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,862.80 : 86,734.98 = 19,900.67 : x
  2. Step 2: Convert to fraction form
    57,862.80/86,734.98 = 19,900.67/x
  3. Step 3: Cross multiply
    57,862.80x = 86,734.98 × 19,900.67
  4. Step 4: Simplify right side
    57,862.80x = 1,726,083,780.76
  5. Step 5: Solve for x
    x = 1,726,083,780.76/57,862.80
  6. Step 6: Final answer
    x = 29,830.63

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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.