Home / 55,309.49-76,333.66-31,439.75

Finding the Fourth Proportional to 55,309.49, 76,333.66 and 31,439.75

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Solution

The fourth proportional to 55,309.49, 76,333.66 and 31,439.75 is: 43,390.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,309.49 : 76,333.66 = 31,439.75 : x
  2. Step 2: Convert to fraction form
    55,309.49/76,333.66 = 31,439.75/x
  3. Step 3: Cross multiply
    55,309.49x = 76,333.66 × 31,439.75
  4. Step 4: Simplify right side
    55,309.49x = 2,399,911,370.78
  5. Step 5: Solve for x
    x = 2,399,911,370.78/55,309.49
  6. Step 6: Final answer
    x = 43,390.59

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1.5x scale

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.