Home / 55,012,120.07-82,520,921.14-20,936,106.95

Finding the Fourth Proportional to 55,012,120.07, 82,520,921.14 and 20,936,106.95

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Solution

The fourth proportional to 55,012,120.07, 82,520,921.14 and 20,936,106.95 is: 31,405,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,012,120.07 : 82,520,921.14 = 20,936,106.95 : x
  2. Step 2: Convert to fraction form
    55,012,120.07/82,520,921.14 = 20,936,106.95/x
  3. Step 3: Cross multiply
    55,012,120.07x = 82,520,921.14 × 20,936,106.95
  4. Step 4: Simplify right side
    55,012,120.07x = 1,727,666,830,134,611.25
  5. Step 5: Solve for x
    x = 1,727,666,830,134,611.25/55,012,120.07
  6. Step 6: Final answer
    x = 31,405,203.58

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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.