Home / 90,678.23-125,139.00-50,393.69

Finding the Fourth Proportional to 90,678.23, 125,139.00 and 50,393.69

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Solution

The fourth proportional to 90,678.23, 125,139.00 and 50,393.69 is: 69,544.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,678.23 : 125,139.00 = 50,393.69 : x
  2. Step 2: Convert to fraction form
    90,678.23/125,139.00 = 50,393.69/x
  3. Step 3: Cross multiply
    90,678.23x = 125,139.00 × 50,393.69
  4. Step 4: Simplify right side
    90,678.23x = 6,306,215,720.94
  5. Step 5: Solve for x
    x = 6,306,215,720.94/90,678.23
  6. Step 6: Final answer
    x = 69,544.98

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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.