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Finding the Fourth Proportional to 21,854,064.60, 30,640,480.20 and 21,854,064.60

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Solution

The fourth proportional to 21,854,064.60, 30,640,480.20 and 21,854,064.60 is: 30,640,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,854,064.60 : 30,640,480.20 = 21,854,064.60 : x
  2. Step 2: Convert to fraction form
    21,854,064.60/30,640,480.20 = 21,854,064.60/x
  3. Step 3: Cross multiply
    21,854,064.60x = 30,640,480.20 × 21,854,064.60
  4. Step 4: Simplify right side
    21,854,064.60x = 669,619,033,665,821
  5. Step 5: Solve for x
    x = 669,619,033,665,821/21,854,064.60
  6. Step 6: Final answer
    x = 30,640,480.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.