Home / 82,537,331.80-123,512,064.90-71,871,770.20

Finding the Fourth Proportional to 82,537,331.80, 123,512,064.90 and 71,871,770.20

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Solution

The fourth proportional to 82,537,331.80, 123,512,064.90 and 71,871,770.20 is: 107,551,704.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,537,331.80 : 123,512,064.90 = 71,871,770.20 : x
  2. Step 2: Convert to fraction form
    82,537,331.80/123,512,064.90 = 71,871,770.20/x
  3. Step 3: Cross multiply
    82,537,331.80x = 123,512,064.90 × 71,871,770.20
  4. Step 4: Simplify right side
    82,537,331.80x = 8,877,030,745,420,287
  5. Step 5: Solve for x
    x = 8,877,030,745,420,287/82,537,331.80
  6. Step 6: Final answer
    x = 107,551,704.81

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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.