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Finding the Fourth Proportional to 70,619.34, 105,929 and 26,257.26

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Solution

The fourth proportional to 70,619.34, 105,929 and 26,257.26 is: 39,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,619.34 : 105,929 = 26,257.26 : x
  2. Step 2: Convert to fraction form
    70,619.34/105,929 = 26,257.26/x
  3. Step 3: Cross multiply
    70,619.34x = 105,929 × 26,257.26
  4. Step 4: Simplify right side
    70,619.34x = 2,781,405,294.54
  5. Step 5: Solve for x
    x = 2,781,405,294.54/70,619.34
  6. Step 6: Final answer
    x = 39,385.89

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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.