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Finding the Fourth Proportional to 103,604, 155,409.36 and 28,724.96

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Solution

The fourth proportional to 103,604, 155,409.36 and 28,724.96 is: 43,088.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,604 : 155,409.36 = 28,724.96 : x
  2. Step 2: Convert to fraction form
    103,604/155,409.36 = 28,724.96/x
  3. Step 3: Cross multiply
    103,604x = 155,409.36 × 28,724.96
  4. Step 4: Simplify right side
    103,604x = 4,464,127,649.63
  5. Step 5: Solve for x
    x = 4,464,127,649.63/103,604
  6. Step 6: Final answer
    x = 43,088.37

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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.