Home / 86,245.34-118,969.96-51,781.26

Finding the Fourth Proportional to 86,245.34, 118,969.96 and 51,781.26

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Solution

The fourth proportional to 86,245.34, 118,969.96 and 51,781.26 is: 71,428.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,245.34 : 118,969.96 = 51,781.26 : x
  2. Step 2: Convert to fraction form
    86,245.34/118,969.96 = 51,781.26/x
  3. Step 3: Cross multiply
    86,245.34x = 118,969.96 × 51,781.26
  4. Step 4: Simplify right side
    86,245.34x = 6,160,414,430.95
  5. Step 5: Solve for x
    x = 6,160,414,430.95/86,245.34
  6. Step 6: Final answer
    x = 71,428.95

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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.