Home / 81,573.28-112,451.96-57,657.76

Finding the Fourth Proportional to 81,573.28, 112,451.96 and 57,657.76

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Solution

The fourth proportional to 81,573.28, 112,451.96 and 57,657.76 is: 79,483.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,573.28 : 112,451.96 = 57,657.76 : x
  2. Step 2: Convert to fraction form
    81,573.28/112,451.96 = 57,657.76/x
  3. Step 3: Cross multiply
    81,573.28x = 112,451.96 × 57,657.76
  4. Step 4: Simplify right side
    81,573.28x = 6,483,728,121.21
  5. Step 5: Solve for x
    x = 6,483,728,121.21/81,573.28
  6. Step 6: Final answer
    x = 79,483.48

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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.