Home / 80,674.65-111,285.59-48,400.70

Finding the Fourth Proportional to 80,674.65, 111,285.59 and 48,400.70

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Solution

The fourth proportional to 80,674.65, 111,285.59 and 48,400.70 is: 66,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,674.65 : 111,285.59 = 48,400.70 : x
  2. Step 2: Convert to fraction form
    80,674.65/111,285.59 = 48,400.70/x
  3. Step 3: Cross multiply
    80,674.65x = 111,285.59 × 48,400.70
  4. Step 4: Simplify right side
    80,674.65x = 5,386,299,657.48
  5. Step 5: Solve for x
    x = 5,386,299,657.48/80,674.65
  6. Step 6: Final answer
    x = 66,765.70

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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.