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Finding the Fourth Proportional to 103,904.40, 155,575.51 and 53,879.34

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Solution

The fourth proportional to 103,904.40, 155,575.51 and 53,879.34 is: 80,673.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,904.40 : 155,575.51 = 53,879.34 : x
  2. Step 2: Convert to fraction form
    103,904.40/155,575.51 = 53,879.34/x
  3. Step 3: Cross multiply
    103,904.40x = 155,575.51 × 53,879.34
  4. Step 4: Simplify right side
    103,904.40x = 8,382,304,994.91
  5. Step 5: Solve for x
    x = 8,382,304,994.91/103,904.40
  6. Step 6: Final answer
    x = 80,673.25

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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.