Home / 66,420,646.20-99,672,959.70-39,126,886.20

Finding the Fourth Proportional to 66,420,646.20, 99,672,959.70 and 39,126,886.20

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Solution

The fourth proportional to 66,420,646.20, 99,672,959.70 and 39,126,886.20 is: 58,715,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420,646.20 : 99,672,959.70 = 39,126,886.20 : x
  2. Step 2: Convert to fraction form
    66,420,646.20/99,672,959.70 = 39,126,886.20/x
  3. Step 3: Cross multiply
    66,420,646.20x = 99,672,959.70 × 39,126,886.20
  4. Step 4: Simplify right side
    66,420,646.20x = 3,899,892,551,399,086.50
  5. Step 5: Solve for x
    x = 3,899,892,551,399,086.50/66,420,646.20
  6. Step 6: Final answer
    x = 58,715,064.89

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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.