Home / 86,262.43-118,406.15-76,620.19

Finding the Fourth Proportional to 86,262.43, 118,406.15 and 76,620.19

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Solution

The fourth proportional to 86,262.43, 118,406.15 and 76,620.19 is: 105,170.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,262.43 : 118,406.15 = 76,620.19 : x
  2. Step 2: Convert to fraction form
    86,262.43/118,406.15 = 76,620.19/x
  3. Step 3: Cross multiply
    86,262.43x = 118,406.15 × 76,620.19
  4. Step 4: Simplify right side
    86,262.43x = 9,072,301,710.17
  5. Step 5: Solve for x
    x = 9,072,301,710.17/86,262.43
  6. Step 6: Final answer
    x = 105,170.95

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.