Home / 91,141.11-125,783.43-55,322.91

Finding the Fourth Proportional to 91,141.11, 125,783.43 and 55,322.91

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Solution

The fourth proportional to 91,141.11, 125,783.43 and 55,322.91 is: 76,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,141.11 : 125,783.43 = 55,322.91 : x
  2. Step 2: Convert to fraction form
    91,141.11/125,783.43 = 55,322.91/x
  3. Step 3: Cross multiply
    91,141.11x = 125,783.43 × 55,322.91
  4. Step 4: Simplify right side
    91,141.11x = 6,958,705,377.38
  5. Step 5: Solve for x
    x = 6,958,705,377.38/91,141.11
  6. Step 6: Final answer
    x = 76,350.90

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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.