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Finding the Fourth Proportional to 69,876,065.80, 104,814,098.70 and 39,642,977.80

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Solution

The fourth proportional to 69,876,065.80, 104,814,098.70 and 39,642,977.80 is: 59,464,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,876,065.80 : 104,814,098.70 = 39,642,977.80 : x
  2. Step 2: Convert to fraction form
    69,876,065.80/104,814,098.70 = 39,642,977.80/x
  3. Step 3: Cross multiply
    69,876,065.80x = 104,814,098.70 × 39,642,977.80
  4. Step 4: Simplify right side
    69,876,065.80x = 4,155,142,987,891,108.50
  5. Step 5: Solve for x
    x = 4,155,142,987,891,108.50/69,876,065.80
  6. Step 6: Final answer
    x = 59,464,466.70

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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.