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Finding the Fourth Proportional to 66,461.76, 99,722.02 and 34,864.28

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Solution

The fourth proportional to 66,461.76, 99,722.02 and 34,864.28 is: 52,311.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,461.76 : 99,722.02 = 34,864.28 : x
  2. Step 2: Convert to fraction form
    66,461.76/99,722.02 = 34,864.28/x
  3. Step 3: Cross multiply
    66,461.76x = 99,722.02 × 34,864.28
  4. Step 4: Simplify right side
    66,461.76x = 3,476,736,427.45
  5. Step 5: Solve for x
    x = 3,476,736,427.45/66,461.76
  6. Step 6: Final answer
    x = 52,311.83

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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.