Home / 66,574,121.20-99,872,111.40-20,515,998.16

Finding the Fourth Proportional to 66,574,121.20, 99,872,111.40 and 20,515,998.16

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Solution

The fourth proportional to 66,574,121.20, 99,872,111.40 and 20,515,998.16 is: 30,777,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,574,121.20 : 99,872,111.40 = 20,515,998.16 : x
  2. Step 2: Convert to fraction form
    66,574,121.20/99,872,111.40 = 20,515,998.16/x
  3. Step 3: Cross multiply
    66,574,121.20x = 99,872,111.40 × 20,515,998.16
  4. Step 4: Simplify right side
    66,574,121.20x = 2,048,976,053,717,715.25
  5. Step 5: Solve for x
    x = 2,048,976,053,717,715.25/66,574,121.20
  6. Step 6: Final answer
    x = 30,777,365.39

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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.