Home / 90,220.52-135,339.88-31,048.40

Finding the Fourth Proportional to 90,220.52, 135,339.88 and 31,048.40

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Solution

The fourth proportional to 90,220.52, 135,339.88 and 31,048.40 is: 46,575.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,220.52 : 135,339.88 = 31,048.40 : x
  2. Step 2: Convert to fraction form
    90,220.52/135,339.88 = 31,048.40/x
  3. Step 3: Cross multiply
    90,220.52x = 135,339.88 × 31,048.40
  4. Step 4: Simplify right side
    90,220.52x = 4,202,086,730.19
  5. Step 5: Solve for x
    x = 4,202,086,730.19/90,220.52
  6. Step 6: Final answer
    x = 46,575.73

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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.