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Finding the Fourth Proportional to 90,889.87, 125,427.74 and 50,602.59

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Solution

The fourth proportional to 90,889.87, 125,427.74 and 50,602.59 is: 69,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,889.87 : 125,427.74 = 50,602.59 : x
  2. Step 2: Convert to fraction form
    90,889.87/125,427.74 = 50,602.59/x
  3. Step 3: Cross multiply
    90,889.87x = 125,427.74 × 50,602.59
  4. Step 4: Simplify right side
    90,889.87x = 6,346,968,501.85
  5. Step 5: Solve for x
    x = 6,346,968,501.85/90,889.87
  6. Step 6: Final answer
    x = 69,831.42

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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.