Home / 84,236.45-126,312.41-28,056.81

Finding the Fourth Proportional to 84,236.45, 126,312.41 and 28,056.81

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Solution

The fourth proportional to 84,236.45, 126,312.41 and 28,056.81 is: 42,071.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,236.45 : 126,312.41 = 28,056.81 : x
  2. Step 2: Convert to fraction form
    84,236.45/126,312.41 = 28,056.81/x
  3. Step 3: Cross multiply
    84,236.45x = 126,312.41 × 28,056.81
  4. Step 4: Simplify right side
    84,236.45x = 3,543,922,726.59
  5. Step 5: Solve for x
    x = 3,543,922,726.59/84,236.45
  6. Step 6: Final answer
    x = 42,071.13

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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.