Home / 70,071.21-105,044.31-25,687.60

Finding the Fourth Proportional to 70,071.21, 105,044.31 and 25,687.60

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Solution

The fourth proportional to 70,071.21, 105,044.31 and 25,687.60 is: 38,508.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,071.21 : 105,044.31 = 25,687.60 : x
  2. Step 2: Convert to fraction form
    70,071.21/105,044.31 = 25,687.60/x
  3. Step 3: Cross multiply
    70,071.21x = 105,044.31 × 25,687.60
  4. Step 4: Simplify right side
    70,071.21x = 2,698,336,348.86
  5. Step 5: Solve for x
    x = 2,698,336,348.86/70,071.21
  6. Step 6: Final answer
    x = 38,508.49

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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.