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Finding the Fourth Proportional to 66,869.55, 100,461.05 and 63,086.64

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Solution

The fourth proportional to 66,869.55, 100,461.05 and 63,086.64 is: 94,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,869.55 : 100,461.05 = 63,086.64 : x
  2. Step 2: Convert to fraction form
    66,869.55/100,461.05 = 63,086.64/x
  3. Step 3: Cross multiply
    66,869.55x = 100,461.05 × 63,086.64
  4. Step 4: Simplify right side
    66,869.55x = 6,337,750,095.37
  5. Step 5: Solve for x
    x = 6,337,750,095.37/66,869.55
  6. Step 6: Final answer
    x = 94,777.82

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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.