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Finding the Fourth Proportional to 66,166.46, 99,249.45 and 28,721.64

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Solution

The fourth proportional to 66,166.46, 99,249.45 and 28,721.64 is: 43,082.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,166.46 : 99,249.45 = 28,721.64 : x
  2. Step 2: Convert to fraction form
    66,166.46/99,249.45 = 28,721.64/x
  3. Step 3: Cross multiply
    66,166.46x = 99,249.45 × 28,721.64
  4. Step 4: Simplify right side
    66,166.46x = 2,850,606,973.10
  5. Step 5: Solve for x
    x = 2,850,606,973.10/66,166.46
  6. Step 6: Final answer
    x = 43,082.36

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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.