Home / 91,072.50-125,692.32-53,361.78

Finding the Fourth Proportional to 91,072.50, 125,692.32 and 53,361.78

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Solution

The fourth proportional to 91,072.50, 125,692.32 and 53,361.78 is: 73,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,072.50 : 125,692.32 = 53,361.78 : x
  2. Step 2: Convert to fraction form
    91,072.50/125,692.32 = 53,361.78/x
  3. Step 3: Cross multiply
    91,072.50x = 125,692.32 × 53,361.78
  4. Step 4: Simplify right side
    91,072.50x = 6,707,165,927.53
  5. Step 5: Solve for x
    x = 6,707,165,927.53/91,072.50
  6. Step 6: Final answer
    x = 73,646.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.