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Finding the Fourth Proportional to 65,238.50, 97,857.75 and 15,990.50

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Solution

The fourth proportional to 65,238.50, 97,857.75 and 15,990.50 is: 23,985.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,238.50 : 97,857.75 = 15,990.50 : x
  2. Step 2: Convert to fraction form
    65,238.50/97,857.75 = 15,990.50/x
  3. Step 3: Cross multiply
    65,238.50x = 97,857.75 × 15,990.50
  4. Step 4: Simplify right side
    65,238.50x = 1,564,794,351.38
  5. Step 5: Solve for x
    x = 1,564,794,351.38/65,238.50
  6. Step 6: Final answer
    x = 23,985.75

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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.