Home / 81,942.48-113,081.76-47,972.16

Finding the Fourth Proportional to 81,942.48, 113,081.76 and 47,972.16

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Solution

The fourth proportional to 81,942.48, 113,081.76 and 47,972.16 is: 66,202.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,942.48 : 113,081.76 = 47,972.16 : x
  2. Step 2: Convert to fraction form
    81,942.48/113,081.76 = 47,972.16/x
  3. Step 3: Cross multiply
    81,942.48x = 113,081.76 × 47,972.16
  4. Step 4: Simplify right side
    81,942.48x = 5,424,776,283.80
  5. Step 5: Solve for x
    x = 5,424,776,283.80/81,942.48
  6. Step 6: Final answer
    x = 66,202.25

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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.