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Finding the Fourth Proportional to 69,083,094.40, 103,624,641.60 and 21,207,817.60

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Solution

The fourth proportional to 69,083,094.40, 103,624,641.60 and 21,207,817.60 is: 31,811,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,083,094.40 : 103,624,641.60 = 21,207,817.60 : x
  2. Step 2: Convert to fraction form
    69,083,094.40/103,624,641.60 = 21,207,817.60/x
  3. Step 3: Cross multiply
    69,083,094.40x = 103,624,641.60 × 21,207,817.60
  4. Step 4: Simplify right side
    69,083,094.40x = 2,197,652,497,918,172.25
  5. Step 5: Solve for x
    x = 2,197,652,497,918,172.25/69,083,094.40
  6. Step 6: Final answer
    x = 31,811,726.40

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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.