Home / 79,905.69-119,873.12-39,945.56

Finding the Fourth Proportional to 79,905.69, 119,873.12 and 39,945.56

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Solution

The fourth proportional to 79,905.69, 119,873.12 and 39,945.56 is: 59,925.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,905.69 : 119,873.12 = 39,945.56 : x
  2. Step 2: Convert to fraction form
    79,905.69/119,873.12 = 39,945.56/x
  3. Step 3: Cross multiply
    79,905.69x = 119,873.12 × 39,945.56
  4. Step 4: Simplify right side
    79,905.69x = 4,788,398,108.25
  5. Step 5: Solve for x
    x = 4,788,398,108.25/79,905.69
  6. Step 6: Final answer
    x = 59,925.62

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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.