Home / 40,378.52-55,785.56-30,851.75

Finding the Fourth Proportional to 40,378.52, 55,785.56 and 30,851.75

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Solution

The fourth proportional to 40,378.52, 55,785.56 and 30,851.75 is: 42,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,378.52 : 55,785.56 = 30,851.75 : x
  2. Step 2: Convert to fraction form
    40,378.52/55,785.56 = 30,851.75/x
  3. Step 3: Cross multiply
    40,378.52x = 55,785.56 × 30,851.75
  4. Step 4: Simplify right side
    40,378.52x = 1,721,081,996.47
  5. Step 5: Solve for x
    x = 1,721,081,996.47/40,378.52
  6. Step 6: Final answer
    x = 42,623.70

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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.