Home / 85,343,462.80-128,015,526.33-20,647,164.06

Finding the Fourth Proportional to 85,343,462.80, 128,015,526.33 and 20,647,164.06

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Solution

The fourth proportional to 85,343,462.80, 128,015,526.33 and 20,647,164.06 is: 30,970,826.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,343,462.80 : 128,015,526.33 = 20,647,164.06 : x
  2. Step 2: Convert to fraction form
    85,343,462.80/128,015,526.33 = 20,647,164.06/x
  3. Step 3: Cross multiply
    85,343,462.80x = 128,015,526.33 × 20,647,164.06
  4. Step 4: Simplify right side
    85,343,462.80x = 2,643,157,574,362,759.50
  5. Step 5: Solve for x
    x = 2,643,157,574,362,759.50/85,343,462.80
  6. Step 6: Final answer
    x = 30,970,826.44

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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.