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Finding the Fourth Proportional to 57,801.45, 86,707.95 and 15,682.20

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Solution

The fourth proportional to 57,801.45, 86,707.95 and 15,682.20 is: 23,524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,801.45 : 86,707.95 = 15,682.20 : x
  2. Step 2: Convert to fraction form
    57,801.45/86,707.95 = 15,682.20/x
  3. Step 3: Cross multiply
    57,801.45x = 86,707.95 × 15,682.20
  4. Step 4: Simplify right side
    57,801.45x = 1,359,771,413.49
  5. Step 5: Solve for x
    x = 1,359,771,413.49/57,801.45
  6. Step 6: Final answer
    x = 23,524.87

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1.5x scale

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.