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Finding the Fourth Proportional to 66,252, 91,461.60 and 51,110.64

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Solution

The fourth proportional to 66,252, 91,461.60 and 51,110.64 is: 70,558.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,252 : 91,461.60 = 51,110.64 : x
  2. Step 2: Convert to fraction form
    66,252/91,461.60 = 51,110.64/x
  3. Step 3: Cross multiply
    66,252x = 91,461.60 × 51,110.64
  4. Step 4: Simplify right side
    66,252x = 4,674,660,911.42
  5. Step 5: Solve for x
    x = 4,674,660,911.42/66,252
  6. Step 6: Final answer
    x = 70,558.79

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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.