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Finding the Fourth Proportional to 30,348,799.20, 45,523,198.80 and 21,101,725.80

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Solution

The fourth proportional to 30,348,799.20, 45,523,198.80 and 21,101,725.80 is: 31,652,588.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348,799.20 : 45,523,198.80 = 21,101,725.80 : x
  2. Step 2: Convert to fraction form
    30,348,799.20/45,523,198.80 = 21,101,725.80/x
  3. Step 3: Cross multiply
    30,348,799.20x = 45,523,198.80 × 21,101,725.80
  4. Step 4: Simplify right side
    30,348,799.20x = 960,618,058,616,489
  5. Step 5: Solve for x
    x = 960,618,058,616,489/30,348,799.20
  6. Step 6: Final answer
    x = 31,652,588.70

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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.