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Finding the Fourth Proportional to 66,311, 99,507.96 and 26,868.32

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Solution

The fourth proportional to 66,311, 99,507.96 and 26,868.32 is: 40,319.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,311 : 99,507.96 = 26,868.32 : x
  2. Step 2: Convert to fraction form
    66,311/99,507.96 = 26,868.32/x
  3. Step 3: Cross multiply
    66,311x = 99,507.96 × 26,868.32
  4. Step 4: Simplify right side
    66,311x = 2,673,611,711.83
  5. Step 5: Solve for x
    x = 2,673,611,711.83/66,311
  6. Step 6: Final answer
    x = 40,319.28

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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.