Home / 86,120.19-118,842.17-47,879.69

Finding the Fourth Proportional to 86,120.19, 118,842.17 and 47,879.69

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Solution

The fourth proportional to 86,120.19, 118,842.17 and 47,879.69 is: 66,071.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120.19 : 118,842.17 = 47,879.69 : x
  2. Step 2: Convert to fraction form
    86,120.19/118,842.17 = 47,879.69/x
  3. Step 3: Cross multiply
    86,120.19x = 118,842.17 × 47,879.69
  4. Step 4: Simplify right side
    86,120.19x = 5,690,125,424.92
  5. Step 5: Solve for x
    x = 5,690,125,424.92/86,120.19
  6. Step 6: Final answer
    x = 66,071.91

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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.