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Finding the Fourth Proportional to 70,928.87, 97,882.52 and 39,098.91

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Solution

The fourth proportional to 70,928.87, 97,882.52 and 39,098.91 is: 53,956.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,928.87 : 97,882.52 = 39,098.91 : x
  2. Step 2: Convert to fraction form
    70,928.87/97,882.52 = 39,098.91/x
  3. Step 3: Cross multiply
    70,928.87x = 97,882.52 × 39,098.91
  4. Step 4: Simplify right side
    70,928.87x = 3,827,099,840.05
  5. Step 5: Solve for x
    x = 3,827,099,840.05/70,928.87
  6. Step 6: Final answer
    x = 53,956.87

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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.