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Finding the Fourth Proportional to 91,165.59, 125,814.83 and 50,887.20

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Solution

The fourth proportional to 91,165.59, 125,814.83 and 50,887.20 is: 70,227.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,165.59 : 125,814.83 = 50,887.20 : x
  2. Step 2: Convert to fraction form
    91,165.59/125,814.83 = 50,887.20/x
  3. Step 3: Cross multiply
    91,165.59x = 125,814.83 × 50,887.20
  4. Step 4: Simplify right side
    91,165.59x = 6,402,364,162.74
  5. Step 5: Solve for x
    x = 6,402,364,162.74/91,165.59
  6. Step 6: Final answer
    x = 70,227.86

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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.