Home / 81,403.72-112,392-50,823.43

Finding the Fourth Proportional to 81,403.72, 112,392 and 50,823.43

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Solution

The fourth proportional to 81,403.72, 112,392 and 50,823.43 is: 70,170.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,403.72 : 112,392 = 50,823.43 : x
  2. Step 2: Convert to fraction form
    81,403.72/112,392 = 50,823.43/x
  3. Step 3: Cross multiply
    81,403.72x = 112,392 × 50,823.43
  4. Step 4: Simplify right side
    81,403.72x = 5,712,146,944.56
  5. Step 5: Solve for x
    x = 5,712,146,944.56/81,403.72
  6. Step 6: Final answer
    x = 70,170.59

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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.