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Finding the Fourth Proportional to 66,442,638.70, 99,663,958.05 and 66,442,638.70

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Solution

The fourth proportional to 66,442,638.70, 99,663,958.05 and 66,442,638.70 is: 99,663,958.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,442,638.70 : 99,663,958.05 = 66,442,638.70 : x
  2. Step 2: Convert to fraction form
    66,442,638.70/99,663,958.05 = 66,442,638.70/x
  3. Step 3: Cross multiply
    66,442,638.70x = 99,663,958.05 × 66,442,638.70
  4. Step 4: Simplify right side
    66,442,638.70x = 6,621,936,356,128,107
  5. Step 5: Solve for x
    x = 6,621,936,356,128,107/66,442,638.70
  6. Step 6: Final answer
    x = 99,663,958.05

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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.