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Finding the Fourth Proportional to 69,199,053.60, 103,727,721.60 and 40,430,380.80

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Solution

The fourth proportional to 69,199,053.60, 103,727,721.60 and 40,430,380.80 is: 60,604,171.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,199,053.60 : 103,727,721.60 = 40,430,380.80 : x
  2. Step 2: Convert to fraction form
    69,199,053.60/103,727,721.60 = 40,430,380.80/x
  3. Step 3: Cross multiply
    69,199,053.60x = 103,727,721.60 × 40,430,380.80
  4. Step 4: Simplify right side
    69,199,053.60x = 4,193,751,283,804,384.50
  5. Step 5: Solve for x
    x = 4,193,751,283,804,384.50/69,199,053.60
  6. Step 6: Final answer
    x = 60,604,171.09

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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.