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Finding the Fourth Proportional to 65,239.75, 97,859.63 and 15,991.75

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Solution

The fourth proportional to 65,239.75, 97,859.63 and 15,991.75 is: 23,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,239.75 : 97,859.63 = 15,991.75 : x
  2. Step 2: Convert to fraction form
    65,239.75/97,859.63 = 15,991.75/x
  3. Step 3: Cross multiply
    65,239.75x = 97,859.63 × 15,991.75
  4. Step 4: Simplify right side
    65,239.75x = 1,564,946,738.05
  5. Step 5: Solve for x
    x = 1,564,946,738.05/65,239.75
  6. Step 6: Final answer
    x = 23,987.63

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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.