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Finding the Fourth Proportional to 73,519.60, 101,454.12 and 39,985.60

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Solution

The fourth proportional to 73,519.60, 101,454.12 and 39,985.60 is: 55,178.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,519.60 : 101,454.12 = 39,985.60 : x
  2. Step 2: Convert to fraction form
    73,519.60/101,454.12 = 39,985.60/x
  3. Step 3: Cross multiply
    73,519.60x = 101,454.12 × 39,985.60
  4. Step 4: Simplify right side
    73,519.60x = 4,056,703,860.67
  5. Step 5: Solve for x
    x = 4,056,703,860.67/73,519.60
  6. Step 6: Final answer
    x = 55,178.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.