Home / 81,229.89-112,125.45-55,820.37

Finding the Fourth Proportional to 81,229.89, 112,125.45 and 55,820.37

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Solution

The fourth proportional to 81,229.89, 112,125.45 and 55,820.37 is: 77,051.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,229.89 : 112,125.45 = 55,820.37 : x
  2. Step 2: Convert to fraction form
    81,229.89/112,125.45 = 55,820.37/x
  3. Step 3: Cross multiply
    81,229.89x = 112,125.45 × 55,820.37
  4. Step 4: Simplify right side
    81,229.89x = 6,258,884,735.21
  5. Step 5: Solve for x
    x = 6,258,884,735.21/81,229.89
  6. Step 6: Final answer
    x = 77,051.49

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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.