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Finding the Fourth Proportional to 70,739.75, 97,634.72 and 40,545.31

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Solution

The fourth proportional to 70,739.75, 97,634.72 and 40,545.31 is: 55,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,739.75 : 97,634.72 = 40,545.31 : x
  2. Step 2: Convert to fraction form
    70,739.75/97,634.72 = 40,545.31/x
  3. Step 3: Cross multiply
    70,739.75x = 97,634.72 × 40,545.31
  4. Step 4: Simplify right side
    70,739.75x = 3,958,630,058.01
  5. Step 5: Solve for x
    x = 3,958,630,058.01/70,739.75
  6. Step 6: Final answer
    x = 55,960.48

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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.