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Finding the Fourth Proportional to 91,607.69, 126,426.02 and 51,330.44

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Solution

The fourth proportional to 91,607.69, 126,426.02 and 51,330.44 is: 70,840.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,607.69 : 126,426.02 = 51,330.44 : x
  2. Step 2: Convert to fraction form
    91,607.69/126,426.02 = 51,330.44/x
  3. Step 3: Cross multiply
    91,607.69x = 126,426.02 × 51,330.44
  4. Step 4: Simplify right side
    91,607.69x = 6,489,503,293.46
  5. Step 5: Solve for x
    x = 6,489,503,293.46/91,607.69
  6. Step 6: Final answer
    x = 70,840.16

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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.