Home / 90,891.37-125,421.78-67,031.20

Finding the Fourth Proportional to 90,891.37, 125,421.78 and 67,031.20

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Solution

The fourth proportional to 90,891.37, 125,421.78 and 67,031.20 is: 92,496.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,891.37 : 125,421.78 = 67,031.20 : x
  2. Step 2: Convert to fraction form
    90,891.37/125,421.78 = 67,031.20/x
  3. Step 3: Cross multiply
    90,891.37x = 125,421.78 × 67,031.20
  4. Step 4: Simplify right side
    90,891.37x = 8,407,172,419.54
  5. Step 5: Solve for x
    x = 8,407,172,419.54/90,891.37
  6. Step 6: Final answer
    x = 92,496.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.