Home / 90,643.25-135,944.38-34,463.32

Finding the Fourth Proportional to 90,643.25, 135,944.38 and 34,463.32

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Solution

The fourth proportional to 90,643.25, 135,944.38 and 34,463.32 is: 51,687.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,643.25 : 135,944.38 = 34,463.32 : x
  2. Step 2: Convert to fraction form
    90,643.25/135,944.38 = 34,463.32/x
  3. Step 3: Cross multiply
    90,643.25x = 135,944.38 × 34,463.32
  4. Step 4: Simplify right side
    90,643.25x = 4,685,094,944.19
  5. Step 5: Solve for x
    x = 4,685,094,944.19/90,643.25
  6. Step 6: Final answer
    x = 51,687.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.