Home / 84,619.20-126,928.80-65,592.30

Finding the Fourth Proportional to 84,619.20, 126,928.80 and 65,592.30

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Solution

The fourth proportional to 84,619.20, 126,928.80 and 65,592.30 is: 98,388.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,619.20 : 126,928.80 = 65,592.30 : x
  2. Step 2: Convert to fraction form
    84,619.20/126,928.80 = 65,592.30/x
  3. Step 3: Cross multiply
    84,619.20x = 126,928.80 × 65,592.30
  4. Step 4: Simplify right side
    84,619.20x = 8,325,551,928.24
  5. Step 5: Solve for x
    x = 8,325,551,928.24/84,619.20
  6. Step 6: Final answer
    x = 98,388.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.