Home / 90,339.35-135,527.20-31,177.31

Finding the Fourth Proportional to 90,339.35, 135,527.20 and 31,177.31

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Solution

The fourth proportional to 90,339.35, 135,527.20 and 31,177.31 is: 46,772.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,339.35 : 135,527.20 = 31,177.31 : x
  2. Step 2: Convert to fraction form
    90,339.35/135,527.20 = 31,177.31/x
  3. Step 3: Cross multiply
    90,339.35x = 135,527.20 × 31,177.31
  4. Step 4: Simplify right side
    90,339.35x = 4,225,372,772.25
  5. Step 5: Solve for x
    x = 4,225,372,772.25/90,339.35
  6. Step 6: Final answer
    x = 46,772.23

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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.