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Finding the Fourth Proportional to 66,576,006.80, 99,864,010.20 and 18,706,950.80

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Solution

The fourth proportional to 66,576,006.80, 99,864,010.20 and 18,706,950.80 is: 28,060,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,576,006.80 : 99,864,010.20 = 18,706,950.80 : x
  2. Step 2: Convert to fraction form
    66,576,006.80/99,864,010.20 = 18,706,950.80/x
  3. Step 3: Cross multiply
    66,576,006.80x = 99,864,010.20 × 18,706,950.80
  4. Step 4: Simplify right side
    66,576,006.80x = 1,868,151,125,502,098.25
  5. Step 5: Solve for x
    x = 1,868,151,125,502,098.25/66,576,006.80
  6. Step 6: Final answer
    x = 28,060,426.20

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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.