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Finding the Fourth Proportional to 71,384.60, 107,076.90 and 45,003.80

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Solution

The fourth proportional to 71,384.60, 107,076.90 and 45,003.80 is: 67,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,384.60 : 107,076.90 = 45,003.80 : x
  2. Step 2: Convert to fraction form
    71,384.60/107,076.90 = 45,003.80/x
  3. Step 3: Cross multiply
    71,384.60x = 107,076.90 × 45,003.80
  4. Step 4: Simplify right side
    71,384.60x = 4,818,867,392.22
  5. Step 5: Solve for x
    x = 4,818,867,392.22/71,384.60
  6. Step 6: Final answer
    x = 67,505.70

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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.