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Finding the Fourth Proportional to 75,137.76, 112,700.12 and 45,546.88

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Solution

The fourth proportional to 75,137.76, 112,700.12 and 45,546.88 is: 68,316.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,137.76 : 112,700.12 = 45,546.88 : x
  2. Step 2: Convert to fraction form
    75,137.76/112,700.12 = 45,546.88/x
  3. Step 3: Cross multiply
    75,137.76x = 112,700.12 × 45,546.88
  4. Step 4: Simplify right side
    75,137.76x = 5,133,138,841.63
  5. Step 5: Solve for x
    x = 5,133,138,841.63/75,137.76
  6. Step 6: Final answer
    x = 68,316.37

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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.