Home / 90,842.74-125,333.81-55,021.30

Finding the Fourth Proportional to 90,842.74, 125,333.81 and 55,021.30

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Solution

The fourth proportional to 90,842.74, 125,333.81 and 55,021.30 is: 75,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,842.74 : 125,333.81 = 55,021.30 : x
  2. Step 2: Convert to fraction form
    90,842.74/125,333.81 = 55,021.30/x
  3. Step 3: Cross multiply
    90,842.74x = 125,333.81 × 55,021.30
  4. Step 4: Simplify right side
    90,842.74x = 6,896,029,160.15
  5. Step 5: Solve for x
    x = 6,896,029,160.15/90,842.74
  6. Step 6: Final answer
    x = 75,911.73

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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.