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Finding the Fourth Proportional to 70,408.65, 105,611.13 and 23,661.51

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Solution

The fourth proportional to 70,408.65, 105,611.13 and 23,661.51 is: 35,491.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,408.65 : 105,611.13 = 23,661.51 : x
  2. Step 2: Convert to fraction form
    70,408.65/105,611.13 = 23,661.51/x
  3. Step 3: Cross multiply
    70,408.65x = 105,611.13 × 23,661.51
  4. Step 4: Simplify right side
    70,408.65x = 2,498,918,808.61
  5. Step 5: Solve for x
    x = 2,498,918,808.61/70,408.65
  6. Step 6: Final answer
    x = 35,491.64

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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.