Home / 90,905.05-136,357.62-43,509.01

Finding the Fourth Proportional to 90,905.05, 136,357.62 and 43,509.01

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Solution

The fourth proportional to 90,905.05, 136,357.62 and 43,509.01 is: 65,263.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,905.05 : 136,357.62 = 43,509.01 : x
  2. Step 2: Convert to fraction form
    90,905.05/136,357.62 = 43,509.01/x
  3. Step 3: Cross multiply
    90,905.05x = 136,357.62 × 43,509.01
  4. Step 4: Simplify right side
    90,905.05x = 5,932,785,052.16
  5. Step 5: Solve for x
    x = 5,932,785,052.16/90,905.05
  6. Step 6: Final answer
    x = 65,263.54

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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.