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Finding the Fourth Proportional to 66,096,307.60, 99,144,461.40 and 20,662,694.80

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Solution

The fourth proportional to 66,096,307.60, 99,144,461.40 and 20,662,694.80 is: 30,994,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,096,307.60 : 99,144,461.40 = 20,662,694.80 : x
  2. Step 2: Convert to fraction form
    66,096,307.60/99,144,461.40 = 20,662,694.80/x
  3. Step 3: Cross multiply
    66,096,307.60x = 99,144,461.40 × 20,662,694.80
  4. Step 4: Simplify right side
    66,096,307.60x = 2,048,591,747,018,581
  5. Step 5: Solve for x
    x = 2,048,591,747,018,581/66,096,307.60
  6. Step 6: Final answer
    x = 30,994,042.20

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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.