Home / 81,186.40-112,071.78-49,365.52

Finding the Fourth Proportional to 81,186.40, 112,071.78 and 49,365.52

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Solution

The fourth proportional to 81,186.40, 112,071.78 and 49,365.52 is: 68,145.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,186.40 : 112,071.78 = 49,365.52 : x
  2. Step 2: Convert to fraction form
    81,186.40/112,071.78 = 49,365.52/x
  3. Step 3: Cross multiply
    81,186.40x = 112,071.78 × 49,365.52
  4. Step 4: Simplify right side
    81,186.40x = 5,532,481,697.03
  5. Step 5: Solve for x
    x = 5,532,481,697.03/81,186.40
  6. Step 6: Final answer
    x = 68,145.42

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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.