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Finding the Fourth Proportional to 70,388.22, 105,597.90 and 38,782.01

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Solution

The fourth proportional to 70,388.22, 105,597.90 and 38,782.01 is: 58,181.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,388.22 : 105,597.90 = 38,782.01 : x
  2. Step 2: Convert to fraction form
    70,388.22/105,597.90 = 38,782.01/x
  3. Step 3: Cross multiply
    70,388.22x = 105,597.90 × 38,782.01
  4. Step 4: Simplify right side
    70,388.22x = 4,095,298,285.79
  5. Step 5: Solve for x
    x = 4,095,298,285.79/70,388.22
  6. Step 6: Final answer
    x = 58,181.59

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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.