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Finding the Fourth Proportional to 78,002.64, 116,960.74 and 36,426.96

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Solution

The fourth proportional to 78,002.64, 116,960.74 and 36,426.96 is: 54,620.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,002.64 : 116,960.74 = 36,426.96 : x
  2. Step 2: Convert to fraction form
    78,002.64/116,960.74 = 36,426.96/x
  3. Step 3: Cross multiply
    78,002.64x = 116,960.74 × 36,426.96
  4. Step 4: Simplify right side
    78,002.64x = 4,260,524,197.55
  5. Step 5: Solve for x
    x = 4,260,524,197.55/78,002.64
  6. Step 6: Final answer
    x = 54,620.26

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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.