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Finding the Fourth Proportional to 79,619.04, 109,871.88 and 43,809.12

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Solution

The fourth proportional to 79,619.04, 109,871.88 and 43,809.12 is: 60,455.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,619.04 : 109,871.88 = 43,809.12 : x
  2. Step 2: Convert to fraction form
    79,619.04/109,871.88 = 43,809.12/x
  3. Step 3: Cross multiply
    79,619.04x = 109,871.88 × 43,809.12
  4. Step 4: Simplify right side
    79,619.04x = 4,813,390,375.55
  5. Step 5: Solve for x
    x = 4,813,390,375.55/79,619.04
  6. Step 6: Final answer
    x = 60,455.27

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1.5x scale

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.