Home / 90,654.48-135,977.63-31,494.78

Finding the Fourth Proportional to 90,654.48, 135,977.63 and 31,494.78

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Solution

The fourth proportional to 90,654.48, 135,977.63 and 31,494.78 is: 47,240.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,654.48 : 135,977.63 = 31,494.78 : x
  2. Step 2: Convert to fraction form
    90,654.48/135,977.63 = 31,494.78/x
  3. Step 3: Cross multiply
    90,654.48x = 135,977.63 × 31,494.78
  4. Step 4: Simplify right side
    90,654.48x = 4,282,585,384.30
  5. Step 5: Solve for x
    x = 4,282,585,384.30/90,654.48
  6. Step 6: Final answer
    x = 47,240.75

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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.