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Finding the Fourth Proportional to 78,790.32, 108,739.98 and 44,809.38

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Solution

The fourth proportional to 78,790.32, 108,739.98 and 44,809.38 is: 61,842.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,790.32 : 108,739.98 = 44,809.38 : x
  2. Step 2: Convert to fraction form
    78,790.32/108,739.98 = 44,809.38/x
  3. Step 3: Cross multiply
    78,790.32x = 108,739.98 × 44,809.38
  4. Step 4: Simplify right side
    78,790.32x = 4,872,571,085.01
  5. Step 5: Solve for x
    x = 4,872,571,085.01/78,790.32
  6. Step 6: Final answer
    x = 61,842.26

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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.