Home / 55,628.16-76,764.96-30,478.56

Finding the Fourth Proportional to 55,628.16, 76,764.96 and 30,478.56

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Solution

The fourth proportional to 55,628.16, 76,764.96 and 30,478.56 is: 42,059.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,628.16 : 76,764.96 = 30,478.56 : x
  2. Step 2: Convert to fraction form
    55,628.16/76,764.96 = 30,478.56/x
  3. Step 3: Cross multiply
    55,628.16x = 76,764.96 × 30,478.56
  4. Step 4: Simplify right side
    55,628.16x = 2,339,685,439.26
  5. Step 5: Solve for x
    x = 2,339,685,439.26/55,628.16
  6. Step 6: Final answer
    x = 42,059.37

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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.