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Finding the Fourth Proportional to 76,479.60, 114,719.40 and 49,907.55

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Solution

The fourth proportional to 76,479.60, 114,719.40 and 49,907.55 is: 74,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,479.60 : 114,719.40 = 49,907.55 : x
  2. Step 2: Convert to fraction form
    76,479.60/114,719.40 = 49,907.55/x
  3. Step 3: Cross multiply
    76,479.60x = 114,719.40 × 49,907.55
  4. Step 4: Simplify right side
    76,479.60x = 5,725,364,191.47
  5. Step 5: Solve for x
    x = 5,725,364,191.47/76,479.60
  6. Step 6: Final answer
    x = 74,861.33

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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.