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Finding the Fourth Proportional to 89,138.88, 123,015.06 and 50,904.66

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Solution

The fourth proportional to 89,138.88, 123,015.06 and 50,904.66 is: 70,250.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,138.88 : 123,015.06 = 50,904.66 : x
  2. Step 2: Convert to fraction form
    89,138.88/123,015.06 = 50,904.66/x
  3. Step 3: Cross multiply
    89,138.88x = 123,015.06 × 50,904.66
  4. Step 4: Simplify right side
    89,138.88x = 6,262,039,804.18
  5. Step 5: Solve for x
    x = 6,262,039,804.18/89,138.88
  6. Step 6: Final answer
    x = 70,250.38

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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.