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Finding the Fourth Proportional to 70,758.77, 97,661.05 and 40,564.36

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Solution

The fourth proportional to 70,758.77, 97,661.05 and 40,564.36 is: 55,986.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,758.77 : 97,661.05 = 40,564.36 : x
  2. Step 2: Convert to fraction form
    70,758.77/97,661.05 = 40,564.36/x
  3. Step 3: Cross multiply
    70,758.77x = 97,661.05 × 40,564.36
  4. Step 4: Simplify right side
    70,758.77x = 3,961,557,644.61
  5. Step 5: Solve for x
    x = 3,961,557,644.61/70,758.77
  6. Step 6: Final answer
    x = 55,986.81

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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.