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Finding the Fourth Proportional to 91,859.80, 126,756.73 and 51,577.99

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Solution

The fourth proportional to 91,859.80, 126,756.73 and 51,577.99 is: 71,172.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,859.80 : 126,756.73 = 51,577.99 : x
  2. Step 2: Convert to fraction form
    91,859.80/126,756.73 = 51,577.99/x
  3. Step 3: Cross multiply
    91,859.80x = 126,756.73 × 51,577.99
  4. Step 4: Simplify right side
    91,859.80x = 6,537,857,352.37
  5. Step 5: Solve for x
    x = 6,537,857,352.37/91,859.80
  6. Step 6: Final answer
    x = 71,172.13

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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.