Home / 84,869.10-127,299.60-28,703.70

Finding the Fourth Proportional to 84,869.10, 127,299.60 and 28,703.70

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Solution

The fourth proportional to 84,869.10, 127,299.60 and 28,703.70 is: 43,054.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,869.10 : 127,299.60 = 28,703.70 : x
  2. Step 2: Convert to fraction form
    84,869.10/127,299.60 = 28,703.70/x
  3. Step 3: Cross multiply
    84,869.10x = 127,299.60 × 28,703.70
  4. Step 4: Simplify right side
    84,869.10x = 3,653,969,528.52
  5. Step 5: Solve for x
    x = 3,653,969,528.52/84,869.10
  6. Step 6: Final answer
    x = 43,054.18

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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.