Home / 90,576.76-135,821.43-37,972.12

Finding the Fourth Proportional to 90,576.76, 135,821.43 and 37,972.12

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Solution

The fourth proportional to 90,576.76, 135,821.43 and 37,972.12 is: 56,939.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,576.76 : 135,821.43 = 37,972.12 : x
  2. Step 2: Convert to fraction form
    90,576.76/135,821.43 = 37,972.12/x
  3. Step 3: Cross multiply
    90,576.76x = 135,821.43 × 37,972.12
  4. Step 4: Simplify right side
    90,576.76x = 5,157,427,638.53
  5. Step 5: Solve for x
    x = 5,157,427,638.53/90,576.76
  6. Step 6: Final answer
    x = 56,939.86

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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.