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Finding the Fourth Proportional to 76,662.55, 114,993.14 and 20,501.07

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Solution

The fourth proportional to 76,662.55, 114,993.14 and 20,501.07 is: 30,751.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,662.55 : 114,993.14 = 20,501.07 : x
  2. Step 2: Convert to fraction form
    76,662.55/114,993.14 = 20,501.07/x
  3. Step 3: Cross multiply
    76,662.55x = 114,993.14 × 20,501.07
  4. Step 4: Simplify right side
    76,662.55x = 2,357,483,022.16
  5. Step 5: Solve for x
    x = 2,357,483,022.16/76,662.55
  6. Step 6: Final answer
    x = 30,751.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.