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Finding the Fourth Proportional to 91,984, 126,938.04 and 52,240

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Solution

The fourth proportional to 91,984, 126,938.04 and 52,240 is: 72,091.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,984 : 126,938.04 = 52,240 : x
  2. Step 2: Convert to fraction form
    91,984/126,938.04 = 52,240/x
  3. Step 3: Cross multiply
    91,984x = 126,938.04 × 52,240
  4. Step 4: Simplify right side
    91,984x = 6,631,243,209.60
  5. Step 5: Solve for x
    x = 6,631,243,209.60/91,984
  6. Step 6: Final answer
    x = 72,091.27

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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.