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Finding the Fourth Proportional to 79,372.68, 119,097.90 and 31,985.70

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Solution

The fourth proportional to 79,372.68, 119,097.90 and 31,985.70 is: 47,994.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,372.68 : 119,097.90 = 31,985.70 : x
  2. Step 2: Convert to fraction form
    79,372.68/119,097.90 = 31,985.70/x
  3. Step 3: Cross multiply
    79,372.68x = 119,097.90 × 31,985.70
  4. Step 4: Simplify right side
    79,372.68x = 3,809,429,700.03
  5. Step 5: Solve for x
    x = 3,809,429,700.03/79,372.68
  6. Step 6: Final answer
    x = 47,994.22

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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.