Home / 45,111.28-67,665.30-11,831.08

Finding the Fourth Proportional to 45,111.28, 67,665.30 and 11,831.08

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Solution

The fourth proportional to 45,111.28, 67,665.30 and 11,831.08 is: 17,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,111.28 : 67,665.30 = 11,831.08 : x
  2. Step 2: Convert to fraction form
    45,111.28/67,665.30 = 11,831.08/x
  3. Step 3: Cross multiply
    45,111.28x = 67,665.30 × 11,831.08
  4. Step 4: Simplify right side
    45,111.28x = 800,553,577.52
  5. Step 5: Solve for x
    x = 800,553,577.52/45,111.28
  6. Step 6: Final answer
    x = 17,746.20

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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.