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Finding the Fourth Proportional to 76,278.60, 114,450.30 and 36,815.40

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Solution

The fourth proportional to 76,278.60, 114,450.30 and 36,815.40 is: 55,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,278.60 : 114,450.30 = 36,815.40 : x
  2. Step 2: Convert to fraction form
    76,278.60/114,450.30 = 36,815.40/x
  3. Step 3: Cross multiply
    76,278.60x = 114,450.30 × 36,815.40
  4. Step 4: Simplify right side
    76,278.60x = 4,213,533,574.62
  5. Step 5: Solve for x
    x = 4,213,533,574.62/76,278.60
  6. Step 6: Final answer
    x = 55,238.74

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1.5x scale

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.