Home / 78,065.84-117,111-25,463.18

Finding the Fourth Proportional to 78,065.84, 117,111 and 25,463.18

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Solution

The fourth proportional to 78,065.84, 117,111 and 25,463.18 is: 38,198.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,065.84 : 117,111 = 25,463.18 : x
  2. Step 2: Convert to fraction form
    78,065.84/117,111 = 25,463.18/x
  3. Step 3: Cross multiply
    78,065.84x = 117,111 × 25,463.18
  4. Step 4: Simplify right side
    78,065.84x = 2,982,018,472.98
  5. Step 5: Solve for x
    x = 2,982,018,472.98/78,065.84
  6. Step 6: Final answer
    x = 38,198.76

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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.