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Finding the Fourth Proportional to 91,881.36, 137,693.52 and 49,670.28

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Solution

The fourth proportional to 91,881.36, 137,693.52 and 49,670.28 is: 74,435.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,881.36 : 137,693.52 = 49,670.28 : x
  2. Step 2: Convert to fraction form
    91,881.36/137,693.52 = 49,670.28/x
  3. Step 3: Cross multiply
    91,881.36x = 137,693.52 × 49,670.28
  4. Step 4: Simplify right side
    91,881.36x = 6,839,275,692.59
  5. Step 5: Solve for x
    x = 6,839,275,692.59/91,881.36
  6. Step 6: Final answer
    x = 74,435.94

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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.