Home / 45,707.42-68,569.71-20,749.23

Finding the Fourth Proportional to 45,707.42, 68,569.71 and 20,749.23

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Solution

The fourth proportional to 45,707.42, 68,569.71 and 20,749.23 is: 31,127.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,707.42 : 68,569.71 = 20,749.23 : x
  2. Step 2: Convert to fraction form
    45,707.42/68,569.71 = 20,749.23/x
  3. Step 3: Cross multiply
    45,707.42x = 68,569.71 × 20,749.23
  4. Step 4: Simplify right side
    45,707.42x = 1,422,768,606.01
  5. Step 5: Solve for x
    x = 1,422,768,606.01/45,707.42
  6. Step 6: Final answer
    x = 31,127.74

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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.