Home / 79,385.96-109,554-43,579.28

Finding the Fourth Proportional to 79,385.96, 109,554 and 43,579.28

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Solution

The fourth proportional to 79,385.96, 109,554 and 43,579.28 is: 60,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,385.96 : 109,554 = 43,579.28 : x
  2. Step 2: Convert to fraction form
    79,385.96/109,554 = 43,579.28/x
  3. Step 3: Cross multiply
    79,385.96x = 109,554 × 43,579.28
  4. Step 4: Simplify right side
    79,385.96x = 4,774,284,441.12
  5. Step 5: Solve for x
    x = 4,774,284,441.12/79,385.96
  6. Step 6: Final answer
    x = 60,140.16

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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.