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Finding the Fourth Proportional to 65,900.88, 98,850.39 and 15,981.42

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Solution

The fourth proportional to 65,900.88, 98,850.39 and 15,981.42 is: 23,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,900.88 : 98,850.39 = 15,981.42 : x
  2. Step 2: Convert to fraction form
    65,900.88/98,850.39 = 15,981.42/x
  3. Step 3: Cross multiply
    65,900.88x = 98,850.39 × 15,981.42
  4. Step 4: Simplify right side
    65,900.88x = 1,579,769,599.75
  5. Step 5: Solve for x
    x = 1,579,769,599.75/65,900.88
  6. Step 6: Final answer
    x = 23,971.90

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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.