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Finding the Fourth Proportional to 67,865.60, 101,841.60 and 39,785.60

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Solution

The fourth proportional to 67,865.60, 101,841.60 and 39,785.60 is: 59,703.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,865.60 : 101,841.60 = 39,785.60 : x
  2. Step 2: Convert to fraction form
    67,865.60/101,841.60 = 39,785.60/x
  3. Step 3: Cross multiply
    67,865.60x = 101,841.60 × 39,785.60
  4. Step 4: Simplify right side
    67,865.60x = 4,051,829,160.96
  5. Step 5: Solve for x
    x = 4,051,829,160.96/67,865.60
  6. Step 6: Final answer
    x = 59,703.73

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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.