Home / 90,909.66-125,455.48-50,631.18

Finding the Fourth Proportional to 90,909.66, 125,455.48 and 50,631.18

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Solution

The fourth proportional to 90,909.66, 125,455.48 and 50,631.18 is: 69,871.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,909.66 : 125,455.48 = 50,631.18 : x
  2. Step 2: Convert to fraction form
    90,909.66/125,455.48 = 50,631.18/x
  3. Step 3: Cross multiply
    90,909.66x = 125,455.48 × 50,631.18
  4. Step 4: Simplify right side
    90,909.66x = 6,351,958,989.87
  5. Step 5: Solve for x
    x = 6,351,958,989.87/90,909.66
  6. Step 6: Final answer
    x = 69,871.11

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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.