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Finding the Fourth Proportional to 91,809.78, 126,812.98 and 75,735.34

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Solution

The fourth proportional to 91,809.78, 126,812.98 and 75,735.34 is: 104,610.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,809.78 : 126,812.98 = 75,735.34 : x
  2. Step 2: Convert to fraction form
    91,809.78/126,812.98 = 75,735.34/x
  3. Step 3: Cross multiply
    91,809.78x = 126,812.98 × 75,735.34
  4. Step 4: Simplify right side
    91,809.78x = 9,604,224,156.71
  5. Step 5: Solve for x
    x = 9,604,224,156.71/91,809.78
  6. Step 6: Final answer
    x = 104,610.03

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1.5x scale

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.