Home / 66,420,829.20-99,673,234.20-39,127,069.20

Finding the Fourth Proportional to 66,420,829.20, 99,673,234.20 and 39,127,069.20

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Solution

The fourth proportional to 66,420,829.20, 99,673,234.20 and 39,127,069.20 is: 58,715,339.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420,829.20 : 99,673,234.20 = 39,127,069.20 : x
  2. Step 2: Convert to fraction form
    66,420,829.20/99,673,234.20 = 39,127,069.20/x
  3. Step 3: Cross multiply
    66,420,829.20x = 99,673,234.20 × 39,127,069.20
  4. Step 4: Simplify right side
    66,420,829.20x = 3,899,921,531,931,207
  5. Step 5: Solve for x
    x = 3,899,921,531,931,207/66,420,829.20
  6. Step 6: Final answer
    x = 58,715,339.43

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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.