Home / 81,994.28-113,113.44-47,981.72

Finding the Fourth Proportional to 81,994.28, 113,113.44 and 47,981.72

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Solution

The fourth proportional to 81,994.28, 113,113.44 and 47,981.72 is: 66,192.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,994.28 : 113,113.44 = 47,981.72 : x
  2. Step 2: Convert to fraction form
    81,994.28/113,113.44 = 47,981.72/x
  3. Step 3: Cross multiply
    81,994.28x = 113,113.44 × 47,981.72
  4. Step 4: Simplify right side
    81,994.28x = 5,427,377,406.32
  5. Step 5: Solve for x
    x = 5,427,377,406.32/81,994.28
  6. Step 6: Final answer
    x = 66,192.15

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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.