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Finding the Fourth Proportional to 91,148, 125,784.24 and 51,404

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Solution

The fourth proportional to 91,148, 125,784.24 and 51,404 is: 70,937.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,148 : 125,784.24 = 51,404 : x
  2. Step 2: Convert to fraction form
    91,148/125,784.24 = 51,404/x
  3. Step 3: Cross multiply
    91,148x = 125,784.24 × 51,404
  4. Step 4: Simplify right side
    91,148x = 6,465,813,072.96
  5. Step 5: Solve for x
    x = 6,465,813,072.96/91,148
  6. Step 6: Final answer
    x = 70,937.52

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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.