Home / 81,540.25-112,525.75-47,572.09

Finding the Fourth Proportional to 81,540.25, 112,525.75 and 47,572.09

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Solution

The fourth proportional to 81,540.25, 112,525.75 and 47,572.09 is: 65,649.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,540.25 : 112,525.75 = 47,572.09 : x
  2. Step 2: Convert to fraction form
    81,540.25/112,525.75 = 47,572.09/x
  3. Step 3: Cross multiply
    81,540.25x = 112,525.75 × 47,572.09
  4. Step 4: Simplify right side
    81,540.25x = 5,353,085,106.32
  5. Step 5: Solve for x
    x = 5,353,085,106.32/81,540.25
  6. Step 6: Final answer
    x = 65,649.60

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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.