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Finding the Fourth Proportional to 65,379.40, 97,874.70 and 39,070.60

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Solution

The fourth proportional to 65,379.40, 97,874.70 and 39,070.60 is: 58,489.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,379.40 : 97,874.70 = 39,070.60 : x
  2. Step 2: Convert to fraction form
    65,379.40/97,874.70 = 39,070.60/x
  3. Step 3: Cross multiply
    65,379.40x = 97,874.70 × 39,070.60
  4. Step 4: Simplify right side
    65,379.40x = 3,824,023,253.82
  5. Step 5: Solve for x
    x = 3,824,023,253.82/65,379.40
  6. Step 6: Final answer
    x = 58,489.73

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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.