Home / 66,214,905.80-99,326,557.02-20,778,493.64

Finding the Fourth Proportional to 66,214,905.80, 99,326,557.02 and 20,778,493.64

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Solution

The fourth proportional to 66,214,905.80, 99,326,557.02 and 20,778,493.64 is: 31,169,057.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,214,905.80 : 99,326,557.02 = 20,778,493.64 : x
  2. Step 2: Convert to fraction form
    66,214,905.80/99,326,557.02 = 20,778,493.64/x
  3. Step 3: Cross multiply
    66,214,905.80x = 99,326,557.02 × 20,778,493.64
  4. Step 4: Simplify right side
    66,214,905.80x = 2,063,856,233,323,167.25
  5. Step 5: Solve for x
    x = 2,063,856,233,323,167.25/66,214,905.80
  6. Step 6: Final answer
    x = 31,169,057.91

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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.