Home / 81,555.53-112,588.70-63,365.42

Finding the Fourth Proportional to 81,555.53, 112,588.70 and 63,365.42

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Solution

The fourth proportional to 81,555.53, 112,588.70 and 63,365.42 is: 87,476.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,555.53 : 112,588.70 = 63,365.42 : x
  2. Step 2: Convert to fraction form
    81,555.53/112,588.70 = 63,365.42/x
  3. Step 3: Cross multiply
    81,555.53x = 112,588.70 × 63,365.42
  4. Step 4: Simplify right side
    81,555.53x = 7,134,229,382.98
  5. Step 5: Solve for x
    x = 7,134,229,382.98/81,555.53
  6. Step 6: Final answer
    x = 87,476.96

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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.