Home / 45,707.49-68,569.81-20,749.29

Finding the Fourth Proportional to 45,707.49, 68,569.81 and 20,749.29

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Solution

The fourth proportional to 45,707.49, 68,569.81 and 20,749.29 is: 31,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,707.49 : 68,569.81 = 20,749.29 : x
  2. Step 2: Convert to fraction form
    45,707.49/68,569.81 = 20,749.29/x
  3. Step 3: Cross multiply
    45,707.49x = 68,569.81 × 20,749.29
  4. Step 4: Simplify right side
    45,707.49x = 1,422,774,924.81
  5. Step 5: Solve for x
    x = 1,422,774,924.81/45,707.49
  6. Step 6: Final answer
    x = 31,127.83

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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.