Home / 80,616.51-111,281.79-53,749.20

Finding the Fourth Proportional to 80,616.51, 111,281.79 and 53,749.20

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Solution

The fourth proportional to 80,616.51, 111,281.79 and 53,749.20 is: 74,194.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,616.51 : 111,281.79 = 53,749.20 : x
  2. Step 2: Convert to fraction form
    80,616.51/111,281.79 = 53,749.20/x
  3. Step 3: Cross multiply
    80,616.51x = 111,281.79 × 53,749.20
  4. Step 4: Simplify right side
    80,616.51x = 5,981,307,187.07
  5. Step 5: Solve for x
    x = 5,981,307,187.07/80,616.51
  6. Step 6: Final answer
    x = 74,194.57

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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.