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Finding the Fourth Proportional to 79,675.88, 119,353.55 and 36,921.40

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Solution

The fourth proportional to 79,675.88, 119,353.55 and 36,921.40 is: 55,307.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,675.88 : 119,353.55 = 36,921.40 : x
  2. Step 2: Convert to fraction form
    79,675.88/119,353.55 = 36,921.40/x
  3. Step 3: Cross multiply
    79,675.88x = 119,353.55 × 36,921.40
  4. Step 4: Simplify right side
    79,675.88x = 4,406,699,677.98
  5. Step 5: Solve for x
    x = 4,406,699,677.98/79,675.88
  6. Step 6: Final answer
    x = 55,307.83

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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.