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Finding the Fourth Proportional to 66,972.34, 100,458.50 and 52,192.32

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Solution

The fourth proportional to 66,972.34, 100,458.50 and 52,192.32 is: 78,288.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,972.34 : 100,458.50 = 52,192.32 : x
  2. Step 2: Convert to fraction form
    66,972.34/100,458.50 = 52,192.32/x
  3. Step 3: Cross multiply
    66,972.34x = 100,458.50 × 52,192.32
  4. Step 4: Simplify right side
    66,972.34x = 5,243,162,178.72
  5. Step 5: Solve for x
    x = 5,243,162,178.72/66,972.34
  6. Step 6: Final answer
    x = 78,288.47

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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.