Home / 86,842.13-119,845.78-49,116.38

Finding the Fourth Proportional to 86,842.13, 119,845.78 and 49,116.38

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Solution

The fourth proportional to 86,842.13, 119,845.78 and 49,116.38 is: 67,782.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,842.13 : 119,845.78 = 49,116.38 : x
  2. Step 2: Convert to fraction form
    86,842.13/119,845.78 = 49,116.38/x
  3. Step 3: Cross multiply
    86,842.13x = 119,845.78 × 49,116.38
  4. Step 4: Simplify right side
    86,842.13x = 5,886,390,149.86
  5. Step 5: Solve for x
    x = 5,886,390,149.86/86,842.13
  6. Step 6: Final answer
    x = 67,782.66

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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.