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Finding the Fourth Proportional to 69,398,006.40, 95,769,812.16 and 38,458,684.80

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Solution

The fourth proportional to 69,398,006.40, 95,769,812.16 and 38,458,684.80 is: 53,073,297.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,398,006.40 : 95,769,812.16 = 38,458,684.80 : x
  2. Step 2: Convert to fraction form
    69,398,006.40/95,769,812.16 = 38,458,684.80/x
  3. Step 3: Cross multiply
    69,398,006.40x = 95,769,812.16 × 38,458,684.80
  4. Step 4: Simplify right side
    69,398,006.40x = 3,683,181,019,216,646.50
  5. Step 5: Solve for x
    x = 3,683,181,019,216,646.50/69,398,006.40
  6. Step 6: Final answer
    x = 53,073,297.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.