Home / 76,929.84-115,443.36-30,181.68

Finding the Fourth Proportional to 76,929.84, 115,443.36 and 30,181.68

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Solution

The fourth proportional to 76,929.84, 115,443.36 and 30,181.68 is: 45,291.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,929.84 : 115,443.36 = 30,181.68 : x
  2. Step 2: Convert to fraction form
    76,929.84/115,443.36 = 30,181.68/x
  3. Step 3: Cross multiply
    76,929.84x = 115,443.36 × 30,181.68
  4. Step 4: Simplify right side
    76,929.84x = 3,484,274,549.64
  5. Step 5: Solve for x
    x = 3,484,274,549.64/76,929.84
  6. Step 6: Final answer
    x = 45,291.59

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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.