Home / 55,012,113.57-82,520,911.40-20,936,100.45

Finding the Fourth Proportional to 55,012,113.57, 82,520,911.40 and 20,936,100.45

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Solution

The fourth proportional to 55,012,113.57, 82,520,911.40 and 20,936,100.45 is: 31,405,193.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,012,113.57 : 82,520,911.40 = 20,936,100.45 : x
  2. Step 2: Convert to fraction form
    55,012,113.57/82,520,911.40 = 20,936,100.45/x
  3. Step 3: Cross multiply
    55,012,113.57x = 82,520,911.40 × 20,936,100.45
  4. Step 4: Simplify right side
    55,012,113.57x = 1,727,666,090,295,950.25
  5. Step 5: Solve for x
    x = 1,727,666,090,295,950.25/55,012,113.57
  6. Step 6: Final answer
    x = 31,405,193.84

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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.