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Finding the Fourth Proportional to 70,904.98, 97,847.62 and 38,639.89

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Solution

The fourth proportional to 70,904.98, 97,847.62 and 38,639.89 is: 53,322.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,904.98 : 97,847.62 = 38,639.89 : x
  2. Step 2: Convert to fraction form
    70,904.98/97,847.62 = 38,639.89/x
  3. Step 3: Cross multiply
    70,904.98x = 97,847.62 × 38,639.89
  4. Step 4: Simplify right side
    70,904.98x = 3,780,820,932.34
  5. Step 5: Solve for x
    x = 3,780,820,932.34/70,904.98
  6. Step 6: Final answer
    x = 53,322.36

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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.