Home / 81,393,572.90-122,090,359.35-55,565,540.30

Finding the Fourth Proportional to 81,393,572.90, 122,090,359.35 and 55,565,540.30

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Solution

The fourth proportional to 81,393,572.90, 122,090,359.35 and 55,565,540.30 is: 83,348,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,393,572.90 : 122,090,359.35 = 55,565,540.30 : x
  2. Step 2: Convert to fraction form
    81,393,572.90/122,090,359.35 = 55,565,540.30/x
  3. Step 3: Cross multiply
    81,393,572.90x = 122,090,359.35 × 55,565,540.30
  4. Step 4: Simplify right side
    81,393,572.90x = 6,784,016,782,703,906
  5. Step 5: Solve for x
    x = 6,784,016,782,703,906/81,393,572.90
  6. Step 6: Final answer
    x = 83,348,310.45

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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.