Home / 81,055.46-111,856.10-47,072.30

Finding the Fourth Proportional to 81,055.46, 111,856.10 and 47,072.30

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Solution

The fourth proportional to 81,055.46, 111,856.10 and 47,072.30 is: 64,959.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,055.46 : 111,856.10 = 47,072.30 : x
  2. Step 2: Convert to fraction form
    81,055.46/111,856.10 = 47,072.30/x
  3. Step 3: Cross multiply
    81,055.46x = 111,856.10 × 47,072.30
  4. Step 4: Simplify right side
    81,055.46x = 5,265,323,896.03
  5. Step 5: Solve for x
    x = 5,265,323,896.03/81,055.46
  6. Step 6: Final answer
    x = 64,959.52

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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.