Home / 85,373,263.40-128,060,198.84-20,677,111.88

Finding the Fourth Proportional to 85,373,263.40, 128,060,198.84 and 20,677,111.88

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Solution

The fourth proportional to 85,373,263.40, 128,060,198.84 and 20,677,111.88 is: 31,015,741.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,373,263.40 : 128,060,198.84 = 20,677,111.88 : x
  2. Step 2: Convert to fraction form
    85,373,263.40/128,060,198.84 = 20,677,111.88/x
  3. Step 3: Cross multiply
    85,373,263.40x = 128,060,198.84 × 20,677,111.88
  4. Step 4: Simplify right side
    85,373,263.40x = 2,647,915,058,789,726
  5. Step 5: Solve for x
    x = 2,647,915,058,789,726/85,373,263.40
  6. Step 6: Final answer
    x = 31,015,741.38

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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.