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Finding the Fourth Proportional to 70,530.96, 97,331 and 39,485.82

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Solution

The fourth proportional to 70,530.96, 97,331 and 39,485.82 is: 54,489.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,530.96 : 97,331 = 39,485.82 : x
  2. Step 2: Convert to fraction form
    70,530.96/97,331 = 39,485.82/x
  3. Step 3: Cross multiply
    70,530.96x = 97,331 × 39,485.82
  4. Step 4: Simplify right side
    70,530.96x = 3,843,194,346.42
  5. Step 5: Solve for x
    x = 3,843,194,346.42/70,530.96
  6. Step 6: Final answer
    x = 54,489.47

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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.