Home / 78,935.25-117,387.84-76,443.42

Finding the Fourth Proportional to 78,935.25, 117,387.84 and 76,443.42

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Solution

The fourth proportional to 78,935.25, 117,387.84 and 76,443.42 is: 113,682.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,935.25 : 117,387.84 = 76,443.42 : x
  2. Step 2: Convert to fraction form
    78,935.25/117,387.84 = 76,443.42/x
  3. Step 3: Cross multiply
    78,935.25x = 117,387.84 × 76,443.42
  4. Step 4: Simplify right side
    78,935.25x = 8,973,527,956.01
  5. Step 5: Solve for x
    x = 8,973,527,956.01/78,935.25
  6. Step 6: Final answer
    x = 113,682.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.