Home / 90,343.47-135,533.39-31,181.43

Finding the Fourth Proportional to 90,343.47, 135,533.39 and 31,181.43

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Solution

The fourth proportional to 90,343.47, 135,533.39 and 31,181.43 is: 46,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,343.47 : 135,533.39 = 31,181.43 : x
  2. Step 2: Convert to fraction form
    90,343.47/135,533.39 = 31,181.43/x
  3. Step 3: Cross multiply
    90,343.47x = 135,533.39 × 31,181.43
  4. Step 4: Simplify right side
    90,343.47x = 4,226,124,757.04
  5. Step 5: Solve for x
    x = 4,226,124,757.04/90,343.47
  6. Step 6: Final answer
    x = 46,778.42

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1.5x scale

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.