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Finding the Fourth Proportional to 70,772.88, 97,667.30 and 40,557.54

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Solution

The fourth proportional to 70,772.88, 97,667.30 and 40,557.54 is: 55,969.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,772.88 : 97,667.30 = 40,557.54 : x
  2. Step 2: Convert to fraction form
    70,772.88/97,667.30 = 40,557.54/x
  3. Step 3: Cross multiply
    70,772.88x = 97,667.30 × 40,557.54
  4. Step 4: Simplify right side
    70,772.88x = 3,961,145,426.44
  5. Step 5: Solve for x
    x = 3,961,145,426.44/70,772.88
  6. Step 6: Final answer
    x = 55,969.82

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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.