Home / 86,428.69-119,304.43-58,150.78

Finding the Fourth Proportional to 86,428.69, 119,304.43 and 58,150.78

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Solution

The fourth proportional to 86,428.69, 119,304.43 and 58,150.78 is: 80,270.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,428.69 : 119,304.43 = 58,150.78 : x
  2. Step 2: Convert to fraction form
    86,428.69/119,304.43 = 58,150.78/x
  3. Step 3: Cross multiply
    86,428.69x = 119,304.43 × 58,150.78
  4. Step 4: Simplify right side
    86,428.69x = 6,937,645,218.32
  5. Step 5: Solve for x
    x = 6,937,645,218.32/86,428.69
  6. Step 6: Final answer
    x = 80,270.17

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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.