Home / 109,305.76-163,981.68-35,428

Finding the Fourth Proportional to 109,305.76, 163,981.68 and 35,428

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Solution

The fourth proportional to 109,305.76, 163,981.68 and 35,428 is: 53,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,305.76 : 163,981.68 = 35,428 : x
  2. Step 2: Convert to fraction form
    109,305.76/163,981.68 = 35,428/x
  3. Step 3: Cross multiply
    109,305.76x = 163,981.68 × 35,428
  4. Step 4: Simplify right side
    109,305.76x = 5,809,542,959.04
  5. Step 5: Solve for x
    x = 5,809,542,959.04/109,305.76
  6. Step 6: Final answer
    x = 53,149.47

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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.