Home / 90,586.80-135,880.08-31,422.48

Finding the Fourth Proportional to 90,586.80, 135,880.08 and 31,422.48

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Solution

The fourth proportional to 90,586.80, 135,880.08 and 31,422.48 is: 47,133.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,586.80 : 135,880.08 = 31,422.48 : x
  2. Step 2: Convert to fraction form
    90,586.80/135,880.08 = 31,422.48/x
  3. Step 3: Cross multiply
    90,586.80x = 135,880.08 × 31,422.48
  4. Step 4: Simplify right side
    90,586.80x = 4,269,689,096.20
  5. Step 5: Solve for x
    x = 4,269,689,096.20/90,586.80
  6. Step 6: Final answer
    x = 47,133.68

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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.