Home / 55,731.80-76,911.08-30,581.28

Finding the Fourth Proportional to 55,731.80, 76,911.08 and 30,581.28

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Solution

The fourth proportional to 55,731.80, 76,911.08 and 30,581.28 is: 42,202.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,731.80 : 76,911.08 = 30,581.28 : x
  2. Step 2: Convert to fraction form
    55,731.80/76,911.08 = 30,581.28/x
  3. Step 3: Cross multiply
    55,731.80x = 76,911.08 × 30,581.28
  4. Step 4: Simplify right side
    55,731.80x = 2,352,039,272.58
  5. Step 5: Solve for x
    x = 2,352,039,272.58/55,731.80
  6. Step 6: Final answer
    x = 42,202.82

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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.