Home / 81,083.12-111,900.20-45,272.36

Finding the Fourth Proportional to 81,083.12, 111,900.20 and 45,272.36

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Solution

The fourth proportional to 81,083.12, 111,900.20 and 45,272.36 is: 62,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,083.12 : 111,900.20 = 45,272.36 : x
  2. Step 2: Convert to fraction form
    81,083.12/111,900.20 = 45,272.36/x
  3. Step 3: Cross multiply
    81,083.12x = 111,900.20 × 45,272.36
  4. Step 4: Simplify right side
    81,083.12x = 5,065,985,352.61
  5. Step 5: Solve for x
    x = 5,065,985,352.61/81,083.12
  6. Step 6: Final answer
    x = 62,478.92

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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.