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Finding the Fourth Proportional to 84,969.42, 127,454.13 and 28,809.69

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Solution

The fourth proportional to 84,969.42, 127,454.13 and 28,809.69 is: 43,214.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,969.42 : 127,454.13 = 28,809.69 : x
  2. Step 2: Convert to fraction form
    84,969.42/127,454.13 = 28,809.69/x
  3. Step 3: Cross multiply
    84,969.42x = 127,454.13 × 28,809.69
  4. Step 4: Simplify right side
    84,969.42x = 3,671,913,974.52
  5. Step 5: Solve for x
    x = 3,671,913,974.52/84,969.42
  6. Step 6: Final answer
    x = 43,214.54

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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.