Home / 81,723.40-122,585.10-53,729.80

Finding the Fourth Proportional to 81,723.40, 122,585.10 and 53,729.80

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Solution

The fourth proportional to 81,723.40, 122,585.10 and 53,729.80 is: 80,594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,723.40 : 122,585.10 = 53,729.80 : x
  2. Step 2: Convert to fraction form
    81,723.40/122,585.10 = 53,729.80/x
  3. Step 3: Cross multiply
    81,723.40x = 122,585.10 × 53,729.80
  4. Step 4: Simplify right side
    81,723.40x = 6,586,472,905.98
  5. Step 5: Solve for x
    x = 6,586,472,905.98/81,723.40
  6. Step 6: Final answer
    x = 80,594.70

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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.