Home / 57,131,966.80-85,705,823.40-20,731,538.80

Finding the Fourth Proportional to 57,131,966.80, 85,705,823.40 and 20,731,538.80

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Solution

The fourth proportional to 57,131,966.80, 85,705,823.40 and 20,731,538.80 is: 31,100,165.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,131,966.80 : 85,705,823.40 = 20,731,538.80 : x
  2. Step 2: Convert to fraction form
    57,131,966.80/85,705,823.40 = 20,731,538.80/x
  3. Step 3: Cross multiply
    57,131,966.80x = 85,705,823.40 × 20,731,538.80
  4. Step 4: Simplify right side
    57,131,966.80x = 1,776,813,603,203,048
  5. Step 5: Solve for x
    x = 1,776,813,603,203,048/57,131,966.80
  6. Step 6: Final answer
    x = 31,100,165.16

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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.