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Finding the Fourth Proportional to 76,344.80, 114,541.20 and 36,903.20

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Solution

The fourth proportional to 76,344.80, 114,541.20 and 36,903.20 is: 55,366.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,344.80 : 114,541.20 = 36,903.20 : x
  2. Step 2: Convert to fraction form
    76,344.80/114,541.20 = 36,903.20/x
  3. Step 3: Cross multiply
    76,344.80x = 114,541.20 × 36,903.20
  4. Step 4: Simplify right side
    76,344.80x = 4,226,936,811.84
  5. Step 5: Solve for x
    x = 4,226,936,811.84/76,344.80
  6. Step 6: Final answer
    x = 55,366.40

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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.