Home / 90,358.02-135,389.19-54,711.33

Finding the Fourth Proportional to 90,358.02, 135,389.19 and 54,711.33

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Solution

The fourth proportional to 90,358.02, 135,389.19 and 54,711.33 is: 81,977.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,358.02 : 135,389.19 = 54,711.33 : x
  2. Step 2: Convert to fraction form
    90,358.02/135,389.19 = 54,711.33/x
  3. Step 3: Cross multiply
    90,358.02x = 135,389.19 × 54,711.33
  4. Step 4: Simplify right side
    90,358.02x = 7,407,322,652.52
  5. Step 5: Solve for x
    x = 7,407,322,652.52/90,358.02
  6. Step 6: Final answer
    x = 81,977.48

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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.