Home / 68,991.28-95,200.80-42,140.32

Finding the Fourth Proportional to 68,991.28, 95,200.80 and 42,140.32

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Solution

The fourth proportional to 68,991.28, 95,200.80 and 42,140.32 is: 58,149.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,991.28 : 95,200.80 = 42,140.32 : x
  2. Step 2: Convert to fraction form
    68,991.28/95,200.80 = 42,140.32/x
  3. Step 3: Cross multiply
    68,991.28x = 95,200.80 × 42,140.32
  4. Step 4: Simplify right side
    68,991.28x = 4,011,792,176.26
  5. Step 5: Solve for x
    x = 4,011,792,176.26/68,991.28
  6. Step 6: Final answer
    x = 58,149.26

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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.