Home / 90,409.59-124,768.20-50,127.11

Finding the Fourth Proportional to 90,409.59, 124,768.20 and 50,127.11

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Solution

The fourth proportional to 90,409.59, 124,768.20 and 50,127.11 is: 69,177.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,409.59 : 124,768.20 = 50,127.11 : x
  2. Step 2: Convert to fraction form
    90,409.59/124,768.20 = 50,127.11/x
  3. Step 3: Cross multiply
    90,409.59x = 124,768.20 × 50,127.11
  4. Step 4: Simplify right side
    90,409.59x = 6,254,269,285.90
  5. Step 5: Solve for x
    x = 6,254,269,285.90/90,409.59
  6. Step 6: Final answer
    x = 69,177.06

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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.