Home / 51,686.41-77,378.99-38,418.17

Finding the Fourth Proportional to 51,686.41, 77,378.99 and 38,418.17

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Solution

The fourth proportional to 51,686.41, 77,378.99 and 38,418.17 is: 57,515.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,686.41 : 77,378.99 = 38,418.17 : x
  2. Step 2: Convert to fraction form
    51,686.41/77,378.99 = 38,418.17/x
  3. Step 3: Cross multiply
    51,686.41x = 77,378.99 × 38,418.17
  4. Step 4: Simplify right side
    51,686.41x = 2,972,758,903.43
  5. Step 5: Solve for x
    x = 2,972,758,903.43/51,686.41
  6. Step 6: Final answer
    x = 57,515.29

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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.