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Finding the Fourth Proportional to 60,019.16, 90,028.78 and 15,645.80

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Solution

The fourth proportional to 60,019.16, 90,028.78 and 15,645.80 is: 23,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,019.16 : 90,028.78 = 15,645.80 : x
  2. Step 2: Convert to fraction form
    60,019.16/90,028.78 = 15,645.80/x
  3. Step 3: Cross multiply
    60,019.16x = 90,028.78 × 15,645.80
  4. Step 4: Simplify right side
    60,019.16x = 1,408,572,286.12
  5. Step 5: Solve for x
    x = 1,408,572,286.12/60,019.16
  6. Step 6: Final answer
    x = 23,468.71

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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.