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Finding the Fourth Proportional to 91,769.88, 126,599.58 and 57,762.84

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Solution

The fourth proportional to 91,769.88, 126,599.58 and 57,762.84 is: 79,685.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,769.88 : 126,599.58 = 57,762.84 : x
  2. Step 2: Convert to fraction form
    91,769.88/126,599.58 = 57,762.84/x
  3. Step 3: Cross multiply
    91,769.88x = 126,599.58 × 57,762.84
  4. Step 4: Simplify right side
    91,769.88x = 7,312,751,283.61
  5. Step 5: Solve for x
    x = 7,312,751,283.61/91,769.88
  6. Step 6: Final answer
    x = 79,685.75

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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.