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Finding the Fourth Proportional to 70,257.51, 105,410.57 and 40,701.15

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Solution

The fourth proportional to 70,257.51, 105,410.57 and 40,701.15 is: 61,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,257.51 : 105,410.57 = 40,701.15 : x
  2. Step 2: Convert to fraction form
    70,257.51/105,410.57 = 40,701.15/x
  3. Step 3: Cross multiply
    70,257.51x = 105,410.57 × 40,701.15
  4. Step 4: Simplify right side
    70,257.51x = 4,290,331,217.65
  5. Step 5: Solve for x
    x = 4,290,331,217.65/70,257.51
  6. Step 6: Final answer
    x = 61,065.80

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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.