Home / 90,825.18-125,324.31-51,073.50

Finding the Fourth Proportional to 90,825.18, 125,324.31 and 51,073.50

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Solution

The fourth proportional to 90,825.18, 125,324.31 and 51,073.50 is: 70,473.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,825.18 : 125,324.31 = 51,073.50 : x
  2. Step 2: Convert to fraction form
    90,825.18/125,324.31 = 51,073.50/x
  3. Step 3: Cross multiply
    90,825.18x = 125,324.31 × 51,073.50
  4. Step 4: Simplify right side
    90,825.18x = 6,400,751,146.79
  5. Step 5: Solve for x
    x = 6,400,751,146.79/90,825.18
  6. Step 6: Final answer
    x = 70,473.31

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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.