Home / 79,980.48-110,338.20-48,131.28

Finding the Fourth Proportional to 79,980.48, 110,338.20 and 48,131.28

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Solution

The fourth proportional to 79,980.48, 110,338.20 and 48,131.28 is: 66,400.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,980.48 : 110,338.20 = 48,131.28 : x
  2. Step 2: Convert to fraction form
    79,980.48/110,338.20 = 48,131.28/x
  3. Step 3: Cross multiply
    79,980.48x = 110,338.20 × 48,131.28
  4. Step 4: Simplify right side
    79,980.48x = 5,310,718,798.90
  5. Step 5: Solve for x
    x = 5,310,718,798.90/79,980.48
  6. Step 6: Final answer
    x = 66,400.19

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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.