Home / 90,631.50-135,961.82-38,056.02

Finding the Fourth Proportional to 90,631.50, 135,961.82 and 38,056.02

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Solution

The fourth proportional to 90,631.50, 135,961.82 and 38,056.02 is: 57,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,631.50 : 135,961.82 = 38,056.02 : x
  2. Step 2: Convert to fraction form
    90,631.50/135,961.82 = 38,056.02/x
  3. Step 3: Cross multiply
    90,631.50x = 135,961.82 × 38,056.02
  4. Step 4: Simplify right side
    90,631.50x = 5,174,165,741.16
  5. Step 5: Solve for x
    x = 5,174,165,741.16/90,631.50
  6. Step 6: Final answer
    x = 57,090.15

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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.