Home / 79,453.40-109,642.75-43,641.28

Finding the Fourth Proportional to 79,453.40, 109,642.75 and 43,641.28

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Solution

The fourth proportional to 79,453.40, 109,642.75 and 43,641.28 is: 60,223.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,453.40 : 109,642.75 = 43,641.28 : x
  2. Step 2: Convert to fraction form
    79,453.40/109,642.75 = 43,641.28/x
  3. Step 3: Cross multiply
    79,453.40x = 109,642.75 × 43,641.28
  4. Step 4: Simplify right side
    79,453.40x = 4,784,949,952.72
  5. Step 5: Solve for x
    x = 4,784,949,952.72/79,453.40
  6. Step 6: Final answer
    x = 60,223.35

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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.