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Finding the Fourth Proportional to 76,960.80, 115,311.60 and 37,432.80

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Solution

The fourth proportional to 76,960.80, 115,311.60 and 37,432.80 is: 56,086.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,960.80 : 115,311.60 = 37,432.80 : x
  2. Step 2: Convert to fraction form
    76,960.80/115,311.60 = 37,432.80/x
  3. Step 3: Cross multiply
    76,960.80x = 115,311.60 × 37,432.80
  4. Step 4: Simplify right side
    76,960.80x = 4,316,436,060.48
  5. Step 5: Solve for x
    x = 4,316,436,060.48/76,960.80
  6. Step 6: Final answer
    x = 56,086.16

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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.