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Finding the Fourth Proportional to 91,860.87, 126,763.86 and 51,573.90

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Solution

The fourth proportional to 91,860.87, 126,763.86 and 51,573.90 is: 71,169.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,860.87 : 126,763.86 = 51,573.90 : x
  2. Step 2: Convert to fraction form
    91,860.87/126,763.86 = 51,573.90/x
  3. Step 3: Cross multiply
    91,860.87x = 126,763.86 × 51,573.90
  4. Step 4: Simplify right side
    91,860.87x = 6,537,706,639.25
  5. Step 5: Solve for x
    x = 6,537,706,639.25/91,860.87
  6. Step 6: Final answer
    x = 71,169.66

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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.