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Finding the Fourth Proportional to 66,532, 91,805.76 and 40,703.44

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Solution

The fourth proportional to 66,532, 91,805.76 and 40,703.44 is: 56,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,532 : 91,805.76 = 40,703.44 : x
  2. Step 2: Convert to fraction form
    66,532/91,805.76 = 40,703.44/x
  3. Step 3: Cross multiply
    66,532x = 91,805.76 × 40,703.44
  4. Step 4: Simplify right side
    66,532x = 3,736,810,243.81
  5. Step 5: Solve for x
    x = 3,736,810,243.81/66,532
  6. Step 6: Final answer
    x = 56,165.61

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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.