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Finding the Fourth Proportional to 70,103.84, 105,090.96 and 25,720.16

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Solution

The fourth proportional to 70,103.84, 105,090.96 and 25,720.16 is: 38,556.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,103.84 : 105,090.96 = 25,720.16 : x
  2. Step 2: Convert to fraction form
    70,103.84/105,090.96 = 25,720.16/x
  3. Step 3: Cross multiply
    70,103.84x = 105,090.96 × 25,720.16
  4. Step 4: Simplify right side
    70,103.84x = 2,702,956,305.75
  5. Step 5: Solve for x
    x = 2,702,956,305.75/70,103.84
  6. Step 6: Final answer
    x = 38,556.47

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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.