Home / 79,688.12-109,970.33-43,879.40

Finding the Fourth Proportional to 79,688.12, 109,970.33 and 43,879.40

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Solution

The fourth proportional to 79,688.12, 109,970.33 and 43,879.40 is: 60,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,688.12 : 109,970.33 = 43,879.40 : x
  2. Step 2: Convert to fraction form
    79,688.12/109,970.33 = 43,879.40/x
  3. Step 3: Cross multiply
    79,688.12x = 109,970.33 × 43,879.40
  4. Step 4: Simplify right side
    79,688.12x = 4,825,431,741.34
  5. Step 5: Solve for x
    x = 4,825,431,741.34/79,688.12
  6. Step 6: Final answer
    x = 60,553.97

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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.