Home / 76,506.20-114,758.70-45,319

Finding the Fourth Proportional to 76,506.20, 114,758.70 and 45,319

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Solution

The fourth proportional to 76,506.20, 114,758.70 and 45,319 is: 67,978.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,506.20 : 114,758.70 = 45,319 : x
  2. Step 2: Convert to fraction form
    76,506.20/114,758.70 = 45,319/x
  3. Step 3: Cross multiply
    76,506.20x = 114,758.70 × 45,319
  4. Step 4: Simplify right side
    76,506.20x = 5,200,749,525.30
  5. Step 5: Solve for x
    x = 5,200,749,525.30/76,506.20
  6. Step 6: Final answer
    x = 67,978.14

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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.