Home / 55,821.52-77,033.68-30,672.64

Finding the Fourth Proportional to 55,821.52, 77,033.68 and 30,672.64

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Solution

The fourth proportional to 55,821.52, 77,033.68 and 30,672.64 is: 42,328.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,821.52 : 77,033.68 = 30,672.64 : x
  2. Step 2: Convert to fraction form
    55,821.52/77,033.68 = 30,672.64/x
  3. Step 3: Cross multiply
    55,821.52x = 77,033.68 × 30,672.64
  4. Step 4: Simplify right side
    55,821.52x = 2,362,826,334.52
  5. Step 5: Solve for x
    x = 2,362,826,334.52/55,821.52
  6. Step 6: Final answer
    x = 42,328.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.