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Finding the Fourth Proportional to 70,368.68, 105,553.74 and 17,778.24

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Solution

The fourth proportional to 70,368.68, 105,553.74 and 17,778.24 is: 26,667.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,368.68 : 105,553.74 = 17,778.24 : x
  2. Step 2: Convert to fraction form
    70,368.68/105,553.74 = 17,778.24/x
  3. Step 3: Cross multiply
    70,368.68x = 105,553.74 × 17,778.24
  4. Step 4: Simplify right side
    70,368.68x = 1,876,559,722.62
  5. Step 5: Solve for x
    x = 1,876,559,722.62/70,368.68
  6. Step 6: Final answer
    x = 26,667.54

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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.