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Finding the Fourth Proportional to 65,263,072.80, 97,894,609.20 and 19,818,962.40

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Solution

The fourth proportional to 65,263,072.80, 97,894,609.20 and 19,818,962.40 is: 29,728,443.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,263,072.80 : 97,894,609.20 = 19,818,962.40 : x
  2. Step 2: Convert to fraction form
    65,263,072.80/97,894,609.20 = 19,818,962.40/x
  3. Step 3: Cross multiply
    65,263,072.80x = 97,894,609.20 × 19,818,962.40
  4. Step 4: Simplify right side
    65,263,072.80x = 1,940,169,578,897,494
  5. Step 5: Solve for x
    x = 1,940,169,578,897,494/65,263,072.80
  6. Step 6: Final answer
    x = 29,728,443.60

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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.