Home / 90,681.12-125,137.42-50,393.86

Finding the Fourth Proportional to 90,681.12, 125,137.42 and 50,393.86

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Solution

The fourth proportional to 90,681.12, 125,137.42 and 50,393.86 is: 69,542.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,681.12 : 125,137.42 = 50,393.86 : x
  2. Step 2: Convert to fraction form
    90,681.12/125,137.42 = 50,393.86/x
  3. Step 3: Cross multiply
    90,681.12x = 125,137.42 × 50,393.86
  4. Step 4: Simplify right side
    90,681.12x = 6,306,157,624.24
  5. Step 5: Solve for x
    x = 6,306,157,624.24/90,681.12
  6. Step 6: Final answer
    x = 69,542.12

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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.