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Finding the Fourth Proportional to 70,928.37, 97,881.83 and 39,098.42

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Solution

The fourth proportional to 70,928.37, 97,881.83 and 39,098.42 is: 53,956.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,928.37 : 97,881.83 = 39,098.42 : x
  2. Step 2: Convert to fraction form
    70,928.37/97,881.83 = 39,098.42/x
  3. Step 3: Cross multiply
    70,928.37x = 97,881.83 × 39,098.42
  4. Step 4: Simplify right side
    70,928.37x = 3,827,024,214.81
  5. Step 5: Solve for x
    x = 3,827,024,214.81/70,928.37
  6. Step 6: Final answer
    x = 53,956.18

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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.