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Finding the Fourth Proportional to 70,379.94, 105,569.91 and 17,789.42

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Solution

The fourth proportional to 70,379.94, 105,569.91 and 17,789.42 is: 26,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,379.94 : 105,569.91 = 17,789.42 : x
  2. Step 2: Convert to fraction form
    70,379.94/105,569.91 = 17,789.42/x
  3. Step 3: Cross multiply
    70,379.94x = 105,569.91 × 17,789.42
  4. Step 4: Simplify right side
    70,379.94x = 1,878,027,682.24
  5. Step 5: Solve for x
    x = 1,878,027,682.24/70,379.94
  6. Step 6: Final answer
    x = 26,684.13

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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.