Home / 86,129.19-118,854.59-47,888.69

Finding the Fourth Proportional to 86,129.19, 118,854.59 and 47,888.69

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Solution

The fourth proportional to 86,129.19, 118,854.59 and 47,888.69 is: 66,084.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,129.19 : 118,854.59 = 47,888.69 : x
  2. Step 2: Convert to fraction form
    86,129.19/118,854.59 = 47,888.69/x
  3. Step 3: Cross multiply
    86,129.19x = 118,854.59 × 47,888.69
  4. Step 4: Simplify right side
    86,129.19x = 5,691,789,781.87
  5. Step 5: Solve for x
    x = 5,691,789,781.87/86,129.19
  6. Step 6: Final answer
    x = 66,084.33

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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.