Home / 66,521,665.60-99,773,167.20-21,088,052.80

Finding the Fourth Proportional to 66,521,665.60, 99,773,167.20 and 21,088,052.80

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Solution

The fourth proportional to 66,521,665.60, 99,773,167.20 and 21,088,052.80 is: 31,629,121.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,521,665.60 : 99,773,167.20 = 21,088,052.80 : x
  2. Step 2: Convert to fraction form
    66,521,665.60/99,773,167.20 = 21,088,052.80/x
  3. Step 3: Cross multiply
    66,521,665.60x = 99,773,167.20 × 21,088,052.80
  4. Step 4: Simplify right side
    66,521,665.60x = 2,104,021,817,936,828.25
  5. Step 5: Solve for x
    x = 2,104,021,817,936,828.25/66,521,665.60
  6. Step 6: Final answer
    x = 31,629,121.11

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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.