Home / 90,635,859.45-135,954,732.02-72,554,990.31

Finding the Fourth Proportional to 90,635,859.45, 135,954,732.02 and 72,554,990.31

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Solution

The fourth proportional to 90,635,859.45, 135,954,732.02 and 72,554,990.31 is: 108,833,240.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,635,859.45 : 135,954,732.02 = 72,554,990.31 : x
  2. Step 2: Convert to fraction form
    90,635,859.45/135,954,732.02 = 72,554,990.31/x
  3. Step 3: Cross multiply
    90,635,859.45x = 135,954,732.02 × 72,554,990.31
  4. Step 4: Simplify right side
    90,635,859.45x = 9,864,194,263,946,972
  5. Step 5: Solve for x
    x = 9,864,194,263,946,972/90,635,859.45
  6. Step 6: Final answer
    x = 108,833,240.22

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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.