Home / 78,977.48-108,991.42-43,166.70

Finding the Fourth Proportional to 78,977.48, 108,991.42 and 43,166.70

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Solution

The fourth proportional to 78,977.48, 108,991.42 and 43,166.70 is: 59,571.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,977.48 : 108,991.42 = 43,166.70 : x
  2. Step 2: Convert to fraction form
    78,977.48/108,991.42 = 43,166.70/x
  3. Step 3: Cross multiply
    78,977.48x = 108,991.42 × 43,166.70
  4. Step 4: Simplify right side
    78,977.48x = 4,704,799,929.71
  5. Step 5: Solve for x
    x = 4,704,799,929.71/78,977.48
  6. Step 6: Final answer
    x = 59,571.41

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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.