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Finding the Fourth Proportional to 90,875, 125,406.14 and 50,588.70

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Solution

The fourth proportional to 90,875, 125,406.14 and 50,588.70 is: 69,811.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,875 : 125,406.14 = 50,588.70 : x
  2. Step 2: Convert to fraction form
    90,875/125,406.14 = 50,588.70/x
  3. Step 3: Cross multiply
    90,875x = 125,406.14 × 50,588.70
  4. Step 4: Simplify right side
    90,875x = 6,344,133,594.62
  5. Step 5: Solve for x
    x = 6,344,133,594.62/90,875
  6. Step 6: Final answer
    x = 69,811.65

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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.