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Finding the Fourth Proportional to 91,136.59, 125,765.56 and 49,742.00

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Solution

The fourth proportional to 91,136.59, 125,765.56 and 49,742.00 is: 68,642.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,136.59 : 125,765.56 = 49,742.00 : x
  2. Step 2: Convert to fraction form
    91,136.59/125,765.56 = 49,742.00/x
  3. Step 3: Cross multiply
    91,136.59x = 125,765.56 × 49,742.00
  4. Step 4: Simplify right side
    91,136.59x = 6,255,830,390.49
  5. Step 5: Solve for x
    x = 6,255,830,390.49/91,136.59
  6. Step 6: Final answer
    x = 68,642.36

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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.