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Finding the Fourth Proportional to 91,213.98, 125,842.05 and 53,480.94

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Solution

The fourth proportional to 91,213.98, 125,842.05 and 53,480.94 is: 73,784.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,213.98 : 125,842.05 = 53,480.94 : x
  2. Step 2: Convert to fraction form
    91,213.98/125,842.05 = 53,480.94/x
  3. Step 3: Cross multiply
    91,213.98x = 125,842.05 × 53,480.94
  4. Step 4: Simplify right side
    91,213.98x = 6,730,151,125.53
  5. Step 5: Solve for x
    x = 6,730,151,125.53/91,213.98
  6. Step 6: Final answer
    x = 73,784.21

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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.