Home / 76,776.81-115,126.07-57,626.43

Finding the Fourth Proportional to 76,776.81, 115,126.07 and 57,626.43

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Solution

The fourth proportional to 76,776.81, 115,126.07 and 57,626.43 is: 86,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,776.81 : 115,126.07 = 57,626.43 : x
  2. Step 2: Convert to fraction form
    76,776.81/115,126.07 = 57,626.43/x
  3. Step 3: Cross multiply
    76,776.81x = 115,126.07 × 57,626.43
  4. Step 4: Simplify right side
    76,776.81x = 6,634,304,125.90
  5. Step 5: Solve for x
    x = 6,634,304,125.90/76,776.81
  6. Step 6: Final answer
    x = 86,410.26

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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.