Home / 81,055.71-111,856.44-47,072.55

Finding the Fourth Proportional to 81,055.71, 111,856.44 and 47,072.55

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Solution

The fourth proportional to 81,055.71, 111,856.44 and 47,072.55 is: 64,959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,055.71 : 111,856.44 = 47,072.55 : x
  2. Step 2: Convert to fraction form
    81,055.71/111,856.44 = 47,072.55/x
  3. Step 3: Cross multiply
    81,055.71x = 111,856.44 × 47,072.55
  4. Step 4: Simplify right side
    81,055.71x = 5,265,367,864.72
  5. Step 5: Solve for x
    x = 5,265,367,864.72/81,055.71
  6. Step 6: Final answer
    x = 64,959.86

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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.