Home / 78,707.82-118,036.14-26,103.18

Finding the Fourth Proportional to 78,707.82, 118,036.14 and 26,103.18

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Solution

The fourth proportional to 78,707.82, 118,036.14 and 26,103.18 is: 39,146.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,707.82 : 118,036.14 = 26,103.18 : x
  2. Step 2: Convert to fraction form
    78,707.82/118,036.14 = 26,103.18/x
  3. Step 3: Cross multiply
    78,707.82x = 118,036.14 × 26,103.18
  4. Step 4: Simplify right side
    78,707.82x = 3,081,118,608.93
  5. Step 5: Solve for x
    x = 3,081,118,608.93/78,707.82
  6. Step 6: Final answer
    x = 39,146.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.