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Finding the Fourth Proportional to 91,784.94, 126,737.91 and 74,791.74

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Solution

The fourth proportional to 91,784.94, 126,737.91 and 74,791.74 is: 103,273.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,784.94 : 126,737.91 = 74,791.74 : x
  2. Step 2: Convert to fraction form
    91,784.94/126,737.91 = 74,791.74/x
  3. Step 3: Cross multiply
    91,784.94x = 126,737.91 × 74,791.74
  4. Step 4: Simplify right side
    91,784.94x = 9,478,948,812.86
  5. Step 5: Solve for x
    x = 9,478,948,812.86/91,784.94
  6. Step 6: Final answer
    x = 103,273.47

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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.