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Finding the Fourth Proportional to 70,608.44, 97,440.32 and 38,778

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Solution

The fourth proportional to 70,608.44, 97,440.32 and 38,778 is: 53,514.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,608.44 : 97,440.32 = 38,778 : x
  2. Step 2: Convert to fraction form
    70,608.44/97,440.32 = 38,778/x
  3. Step 3: Cross multiply
    70,608.44x = 97,440.32 × 38,778
  4. Step 4: Simplify right side
    70,608.44x = 3,778,540,728.96
  5. Step 5: Solve for x
    x = 3,778,540,728.96/70,608.44
  6. Step 6: Final answer
    x = 53,514.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.