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Finding the Fourth Proportional to 66,434,675.80, 99,652,013.70 and 55,664,138.20

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Solution

The fourth proportional to 66,434,675.80, 99,652,013.70 and 55,664,138.20 is: 83,496,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,434,675.80 : 99,652,013.70 = 55,664,138.20 : x
  2. Step 2: Convert to fraction form
    66,434,675.80/99,652,013.70 = 55,664,138.20/x
  3. Step 3: Cross multiply
    66,434,675.80x = 99,652,013.70 × 55,664,138.20
  4. Step 4: Simplify right side
    66,434,675.80x = 5,547,043,462,505,094
  5. Step 5: Solve for x
    x = 5,547,043,462,505,094/66,434,675.80
  6. Step 6: Final answer
    x = 83,496,207.30

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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.