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Finding the Fourth Proportional to 70,719.89, 97,594.13 and 38,889

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Solution

The fourth proportional to 70,719.89, 97,594.13 and 38,889 is: 53,667.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,719.89 : 97,594.13 = 38,889 : x
  2. Step 2: Convert to fraction form
    70,719.89/97,594.13 = 38,889/x
  3. Step 3: Cross multiply
    70,719.89x = 97,594.13 × 38,889
  4. Step 4: Simplify right side
    70,719.89x = 3,795,338,218.79
  5. Step 5: Solve for x
    x = 3,795,338,218.79/70,719.89
  6. Step 6: Final answer
    x = 53,667.20

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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.