Home / 84,236.21-126,312.05-28,056.56

Finding the Fourth Proportional to 84,236.21, 126,312.05 and 28,056.56

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Solution

The fourth proportional to 84,236.21, 126,312.05 and 28,056.56 is: 42,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,236.21 : 126,312.05 = 28,056.56 : x
  2. Step 2: Convert to fraction form
    84,236.21/126,312.05 = 28,056.56/x
  3. Step 3: Cross multiply
    84,236.21x = 126,312.05 × 28,056.56
  4. Step 4: Simplify right side
    84,236.21x = 3,543,880,837.70
  5. Step 5: Solve for x
    x = 3,543,880,837.70/84,236.21
  6. Step 6: Final answer
    x = 42,070.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.