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Finding the Fourth Proportional to 75,762.57, 104,490.96 and 66,668.31

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Solution

The fourth proportional to 75,762.57, 104,490.96 and 66,668.31 is: 91,948.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,762.57 : 104,490.96 = 66,668.31 : x
  2. Step 2: Convert to fraction form
    75,762.57/104,490.96 = 66,668.31/x
  3. Step 3: Cross multiply
    75,762.57x = 104,490.96 × 66,668.31
  4. Step 4: Simplify right side
    75,762.57x = 6,966,235,713.48
  5. Step 5: Solve for x
    x = 6,966,235,713.48/75,762.57
  6. Step 6: Final answer
    x = 91,948.25

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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.