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Finding the Fourth Proportional to 65,239.40, 97,859.10 and 51,242.60

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Solution

The fourth proportional to 65,239.40, 97,859.10 and 51,242.60 is: 76,863.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,239.40 : 97,859.10 = 51,242.60 : x
  2. Step 2: Convert to fraction form
    65,239.40/97,859.10 = 51,242.60/x
  3. Step 3: Cross multiply
    65,239.40x = 97,859.10 × 51,242.60
  4. Step 4: Simplify right side
    65,239.40x = 5,014,554,717.66
  5. Step 5: Solve for x
    x = 5,014,554,717.66/65,239.40
  6. Step 6: Final answer
    x = 76,863.90

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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.