Home / 86,221.46-118,983.74-47,979.54

Finding the Fourth Proportional to 86,221.46, 118,983.74 and 47,979.54

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Solution

The fourth proportional to 86,221.46, 118,983.74 and 47,979.54 is: 66,210.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,221.46 : 118,983.74 = 47,979.54 : x
  2. Step 2: Convert to fraction form
    86,221.46/118,983.74 = 47,979.54/x
  3. Step 3: Cross multiply
    86,221.46x = 118,983.74 × 47,979.54
  4. Step 4: Simplify right side
    86,221.46x = 5,708,784,872.78
  5. Step 5: Solve for x
    x = 5,708,784,872.78/86,221.46
  6. Step 6: Final answer
    x = 66,210.72

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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.