Home / 81,247.12-112,122.56-45,441.07

Finding the Fourth Proportional to 81,247.12, 112,122.56 and 45,441.07

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Solution

The fourth proportional to 81,247.12, 112,122.56 and 45,441.07 is: 62,709.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,247.12 : 112,122.56 = 45,441.07 : x
  2. Step 2: Convert to fraction form
    81,247.12/112,122.56 = 45,441.07/x
  3. Step 3: Cross multiply
    81,247.12x = 112,122.56 × 45,441.07
  4. Step 4: Simplify right side
    81,247.12x = 5,094,968,930.84
  5. Step 5: Solve for x
    x = 5,094,968,930.84/81,247.12
  6. Step 6: Final answer
    x = 62,709.53

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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.