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Finding the Fourth Proportional to 91,101.59, 125,720.39 and 50,814.32

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Solution

The fourth proportional to 91,101.59, 125,720.39 and 50,814.32 is: 70,123.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,101.59 : 125,720.39 = 50,814.32 : x
  2. Step 2: Convert to fraction form
    91,101.59/125,720.39 = 50,814.32/x
  3. Step 3: Cross multiply
    91,101.59x = 125,720.39 × 50,814.32
  4. Step 4: Simplify right side
    91,101.59x = 6,388,395,245.31
  5. Step 5: Solve for x
    x = 6,388,395,245.31/91,101.59
  6. Step 6: Final answer
    x = 70,123.86

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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.