Home / 55,784.28-76,984.08-30,633.78

Finding the Fourth Proportional to 55,784.28, 76,984.08 and 30,633.78

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Solution

The fourth proportional to 55,784.28, 76,984.08 and 30,633.78 is: 42,275.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,784.28 : 76,984.08 = 30,633.78 : x
  2. Step 2: Convert to fraction form
    55,784.28/76,984.08 = 30,633.78/x
  3. Step 3: Cross multiply
    55,784.28x = 76,984.08 × 30,633.78
  4. Step 4: Simplify right side
    55,784.28x = 2,358,313,370.22
  5. Step 5: Solve for x
    x = 2,358,313,370.22/55,784.28
  6. Step 6: Final answer
    x = 42,275.59

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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.