Home / 81,427.42-121,933.77-53,641.18

Finding the Fourth Proportional to 81,427.42, 121,933.77 and 53,641.18

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Solution

The fourth proportional to 81,427.42, 121,933.77 and 53,641.18 is: 80,325.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,427.42 : 121,933.77 = 53,641.18 : x
  2. Step 2: Convert to fraction form
    81,427.42/121,933.77 = 53,641.18/x
  3. Step 3: Cross multiply
    81,427.42x = 121,933.77 × 53,641.18
  4. Step 4: Simplify right side
    81,427.42x = 6,540,671,304.65
  5. Step 5: Solve for x
    x = 6,540,671,304.65/81,427.42
  6. Step 6: Final answer
    x = 80,325.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.