Home / 78,257.03-117,384.39-54,219.15

Finding the Fourth Proportional to 78,257.03, 117,384.39 and 54,219.15

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Solution

The fourth proportional to 78,257.03, 117,384.39 and 54,219.15 is: 81,327.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,257.03 : 117,384.39 = 54,219.15 : x
  2. Step 2: Convert to fraction form
    78,257.03/117,384.39 = 54,219.15/x
  3. Step 3: Cross multiply
    78,257.03x = 117,384.39 × 54,219.15
  4. Step 4: Simplify right side
    78,257.03x = 6,364,481,849.07
  5. Step 5: Solve for x
    x = 6,364,481,849.07/78,257.03
  6. Step 6: Final answer
    x = 81,327.93

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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.