Home / 90,400.62-135,616.59-30,423.36

Finding the Fourth Proportional to 90,400.62, 135,616.59 and 30,423.36

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Solution

The fourth proportional to 90,400.62, 135,616.59 and 30,423.36 is: 45,640.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,400.62 : 135,616.59 = 30,423.36 : x
  2. Step 2: Convert to fraction form
    90,400.62/135,616.59 = 30,423.36/x
  3. Step 3: Cross multiply
    90,400.62x = 135,616.59 × 30,423.36
  4. Step 4: Simplify right side
    90,400.62x = 4,125,912,339.54
  5. Step 5: Solve for x
    x = 4,125,912,339.54/90,400.62
  6. Step 6: Final answer
    x = 45,640.31

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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.