Home / 81,146.08-111,922.28-54,241.28

Finding the Fourth Proportional to 81,146.08, 111,922.28 and 54,241.28

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Solution

The fourth proportional to 81,146.08, 111,922.28 and 54,241.28 is: 74,813.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,146.08 : 111,922.28 = 54,241.28 : x
  2. Step 2: Convert to fraction form
    81,146.08/111,922.28 = 54,241.28/x
  3. Step 3: Cross multiply
    81,146.08x = 111,922.28 × 54,241.28
  4. Step 4: Simplify right side
    81,146.08x = 6,070,807,727.72
  5. Step 5: Solve for x
    x = 6,070,807,727.72/81,146.08
  6. Step 6: Final answer
    x = 74,813.32

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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.