Home / 90,628.88-135,972.20-38,024.24

Finding the Fourth Proportional to 90,628.88, 135,972.20 and 38,024.24

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Solution

The fourth proportional to 90,628.88, 135,972.20 and 38,024.24 is: 57,048.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,628.88 : 135,972.20 = 38,024.24 : x
  2. Step 2: Convert to fraction form
    90,628.88/135,972.20 = 38,024.24/x
  3. Step 3: Cross multiply
    90,628.88x = 135,972.20 × 38,024.24
  4. Step 4: Simplify right side
    90,628.88x = 5,170,238,981.33
  5. Step 5: Solve for x
    x = 5,170,238,981.33/90,628.88
  6. Step 6: Final answer
    x = 57,048.47

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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.