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Finding the Fourth Proportional to 29,897,918.40, 44,900,021.70 and 21,820,015.20

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Solution

The fourth proportional to 29,897,918.40, 44,900,021.70 and 21,820,015.20 is: 32,768,808.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,897,918.40 : 44,900,021.70 = 21,820,015.20 : x
  2. Step 2: Convert to fraction form
    29,897,918.40/44,900,021.70 = 21,820,015.20/x
  3. Step 3: Cross multiply
    29,897,918.40x = 44,900,021.70 × 21,820,015.20
  4. Step 4: Simplify right side
    29,897,918.40x = 979,719,155,974,329.88
  5. Step 5: Solve for x
    x = 979,719,155,974,329.88/29,897,918.40
  6. Step 6: Final answer
    x = 32,768,808.28

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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.