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Finding the Fourth Proportional to 84,479.34, 116,390.31 and 69,348.04

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Solution

The fourth proportional to 84,479.34, 116,390.31 and 69,348.04 is: 95,543.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,479.34 : 116,390.31 = 69,348.04 : x
  2. Step 2: Convert to fraction form
    84,479.34/116,390.31 = 69,348.04/x
  3. Step 3: Cross multiply
    84,479.34x = 116,390.31 × 69,348.04
  4. Step 4: Simplify right side
    84,479.34x = 8,071,439,873.49
  5. Step 5: Solve for x
    x = 8,071,439,873.49/84,479.34
  6. Step 6: Final answer
    x = 95,543.36

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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.