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Finding the Fourth Proportional to 70,104.31, 105,050.08 and 51,396.80

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Solution

The fourth proportional to 70,104.31, 105,050.08 and 51,396.80 is: 77,017.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,104.31 : 105,050.08 = 51,396.80 : x
  2. Step 2: Convert to fraction form
    70,104.31/105,050.08 = 51,396.80/x
  3. Step 3: Cross multiply
    70,104.31x = 105,050.08 × 51,396.80
  4. Step 4: Simplify right side
    70,104.31x = 5,399,238,085.88
  5. Step 5: Solve for x
    x = 5,399,238,085.88/70,104.31
  6. Step 6: Final answer
    x = 77,017.21

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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.