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Finding the Fourth Proportional to 70,765.12, 97,653.12 and 38,933.44

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Solution

The fourth proportional to 70,765.12, 97,653.12 and 38,933.44 is: 53,726.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,765.12 : 97,653.12 = 38,933.44 : x
  2. Step 2: Convert to fraction form
    70,765.12/97,653.12 = 38,933.44/x
  3. Step 3: Cross multiply
    70,765.12x = 97,653.12 × 38,933.44
  4. Step 4: Simplify right side
    70,765.12x = 3,801,971,888.33
  5. Step 5: Solve for x
    x = 3,801,971,888.33/70,765.12
  6. Step 6: Final answer
    x = 53,726.64

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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.