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Finding the Fourth Proportional to 21,919,938.40, 30,755,098.40 and 21,919,938.40

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Solution

The fourth proportional to 21,919,938.40, 30,755,098.40 and 21,919,938.40 is: 30,755,098.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919,938.40 : 30,755,098.40 = 21,919,938.40 : x
  2. Step 2: Convert to fraction form
    21,919,938.40/30,755,098.40 = 21,919,938.40/x
  3. Step 3: Cross multiply
    21,919,938.40x = 30,755,098.40 × 21,919,938.40
  4. Step 4: Simplify right side
    21,919,938.40x = 674,149,862,413,938.50
  5. Step 5: Solve for x
    x = 674,149,862,413,938.50/21,919,938.40
  6. Step 6: Final answer
    x = 30,755,098.40

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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.