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Finding the Fourth Proportional to 70,860.75, 97,786.35 and 39,029.91

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Solution

The fourth proportional to 70,860.75, 97,786.35 and 39,029.91 is: 53,860.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,860.75 : 97,786.35 = 39,029.91 : x
  2. Step 2: Convert to fraction form
    70,860.75/97,786.35 = 39,029.91/x
  3. Step 3: Cross multiply
    70,860.75x = 97,786.35 × 39,029.91
  4. Step 4: Simplify right side
    70,860.75x = 3,816,592,439.73
  5. Step 5: Solve for x
    x = 3,816,592,439.73/70,860.75
  6. Step 6: Final answer
    x = 53,860.46

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1.5x scale

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.