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Finding the Fourth Proportional to 67,268.16, 100,878.60 and 19,870.60

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Solution

The fourth proportional to 67,268.16, 100,878.60 and 19,870.60 is: 29,798.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,268.16 : 100,878.60 = 19,870.60 : x
  2. Step 2: Convert to fraction form
    67,268.16/100,878.60 = 19,870.60/x
  3. Step 3: Cross multiply
    67,268.16x = 100,878.60 × 19,870.60
  4. Step 4: Simplify right side
    67,268.16x = 2,004,518,309.16
  5. Step 5: Solve for x
    x = 2,004,518,309.16/67,268.16
  6. Step 6: Final answer
    x = 29,798.92

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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.