Home / 76,815.52-115,417.92-73,705.12

Finding the Fourth Proportional to 76,815.52, 115,417.92 and 73,705.12

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Solution

The fourth proportional to 76,815.52, 115,417.92 and 73,705.12 is: 110,744.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,815.52 : 115,417.92 = 73,705.12 : x
  2. Step 2: Convert to fraction form
    76,815.52/115,417.92 = 73,705.12/x
  3. Step 3: Cross multiply
    76,815.52x = 115,417.92 × 73,705.12
  4. Step 4: Simplify right side
    76,815.52x = 8,506,891,643.75
  5. Step 5: Solve for x
    x = 8,506,891,643.75/76,815.52
  6. Step 6: Final answer
    x = 110,744.44

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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.