Home / 54,123.98-81,186.06-20,859.71

Finding the Fourth Proportional to 54,123.98, 81,186.06 and 20,859.71

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Solution

The fourth proportional to 54,123.98, 81,186.06 and 20,859.71 is: 31,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,123.98 : 81,186.06 = 20,859.71 : x
  2. Step 2: Convert to fraction form
    54,123.98/81,186.06 = 20,859.71/x
  3. Step 3: Cross multiply
    54,123.98x = 81,186.06 × 20,859.71
  4. Step 4: Simplify right side
    54,123.98x = 1,693,517,261.71
  5. Step 5: Solve for x
    x = 1,693,517,261.71/54,123.98
  6. Step 6: Final answer
    x = 31,289.60

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1.5x scale

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.