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Finding the Fourth Proportional to 66,307,348.85, 90,841,392.03 and 63,822,165.27

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Solution

The fourth proportional to 66,307,348.85, 90,841,392.03 and 63,822,165.27 is: 87,436,678.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,307,348.85 : 90,841,392.03 = 63,822,165.27 : x
  2. Step 2: Convert to fraction form
    66,307,348.85/90,841,392.03 = 63,822,165.27/x
  3. Step 3: Cross multiply
    66,307,348.85x = 90,841,392.03 × 63,822,165.27
  4. Step 4: Simplify right side
    66,307,348.85x = 5,797,694,335,495,521
  5. Step 5: Solve for x
    x = 5,797,694,335,495,521/66,307,348.85
  6. Step 6: Final answer
    x = 87,436,678.38

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.