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Finding the Fourth Proportional to 45,159.84, 67,728.82 and 18,850.32

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Solution

The fourth proportional to 45,159.84, 67,728.82 and 18,850.32 is: 28,270.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,159.84 : 67,728.82 = 18,850.32 : x
  2. Step 2: Convert to fraction form
    45,159.84/67,728.82 = 18,850.32/x
  3. Step 3: Cross multiply
    45,159.84x = 67,728.82 × 18,850.32
  4. Step 4: Simplify right side
    45,159.84x = 1,276,709,930.22
  5. Step 5: Solve for x
    x = 1,276,709,930.22/45,159.84
  6. Step 6: Final answer
    x = 28,270.91

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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.