Home / 53,275-73,521.84-30,621.28

Finding the Fourth Proportional to 53,275, 73,521.84 and 30,621.28

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Solution

The fourth proportional to 53,275, 73,521.84 and 30,621.28 is: 42,258.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,275 : 73,521.84 = 30,621.28 : x
  2. Step 2: Convert to fraction form
    53,275/73,521.84 = 30,621.28/x
  3. Step 3: Cross multiply
    53,275x = 73,521.84 × 30,621.28
  4. Step 4: Simplify right side
    53,275x = 2,251,332,848.76
  5. Step 5: Solve for x
    x = 2,251,332,848.76/53,275
  6. Step 6: Final answer
    x = 42,258.71

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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.