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Finding the Fourth Proportional to 71,915.65, 107,873.37 and 19,325.13

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Solution

The fourth proportional to 71,915.65, 107,873.37 and 19,325.13 is: 28,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,915.65 : 107,873.37 = 19,325.13 : x
  2. Step 2: Convert to fraction form
    71,915.65/107,873.37 = 19,325.13/x
  3. Step 3: Cross multiply
    71,915.65x = 107,873.37 × 19,325.13
  4. Step 4: Simplify right side
    71,915.65x = 2,084,667,216.78
  5. Step 5: Solve for x
    x = 2,084,667,216.78/71,915.65
  6. Step 6: Final answer
    x = 28,987.67

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1.5x scale

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.