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Finding the Fourth Proportional to 66,433.56, 99,432.72 and 36,402

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Solution

The fourth proportional to 66,433.56, 99,432.72 and 36,402 is: 54,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,433.56 : 99,432.72 = 36,402 : x
  2. Step 2: Convert to fraction form
    66,433.56/99,432.72 = 36,402/x
  3. Step 3: Cross multiply
    66,433.56x = 99,432.72 × 36,402
  4. Step 4: Simplify right side
    66,433.56x = 3,619,549,873.44
  5. Step 5: Solve for x
    x = 3,619,549,873.44/66,433.56
  6. Step 6: Final answer
    x = 54,483.76

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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.