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Finding the Fourth Proportional to 66,492.12, 91,770.52 and 63,502.68

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Solution

The fourth proportional to 66,492.12, 91,770.52 and 63,502.68 is: 87,644.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,492.12 : 91,770.52 = 63,502.68 : x
  2. Step 2: Convert to fraction form
    66,492.12/91,770.52 = 63,502.68/x
  3. Step 3: Cross multiply
    66,492.12x = 91,770.52 × 63,502.68
  4. Step 4: Simplify right side
    66,492.12x = 5,827,673,964.99
  5. Step 5: Solve for x
    x = 5,827,673,964.99/66,492.12
  6. Step 6: Final answer
    x = 87,644.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.