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Finding the Fourth Proportional to 78,859.46, 108,828.47 and 43,051.79

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Solution

The fourth proportional to 78,859.46, 108,828.47 and 43,051.79 is: 59,412.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859.46 : 108,828.47 = 43,051.79 : x
  2. Step 2: Convert to fraction form
    78,859.46/108,828.47 = 43,051.79/x
  3. Step 3: Cross multiply
    78,859.46x = 108,828.47 × 43,051.79
  4. Step 4: Simplify right side
    78,859.46x = 4,685,260,436.46
  5. Step 5: Solve for x
    x = 4,685,260,436.46/78,859.46
  6. Step 6: Final answer
    x = 59,412.79

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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.