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Finding the Fourth Proportional to 70,080.56, 105,134.71 and 25,707.70

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Solution

The fourth proportional to 70,080.56, 105,134.71 and 25,707.70 is: 38,566.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,080.56 : 105,134.71 = 25,707.70 : x
  2. Step 2: Convert to fraction form
    70,080.56/105,134.71 = 25,707.70/x
  3. Step 3: Cross multiply
    70,080.56x = 105,134.71 × 25,707.70
  4. Step 4: Simplify right side
    70,080.56x = 2,702,771,584.27
  5. Step 5: Solve for x
    x = 2,702,771,584.27/70,080.56
  6. Step 6: Final answer
    x = 38,566.64

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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.