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Finding the Fourth Proportional to 70,202.53, 96,866.06 and 39,987.19

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Solution

The fourth proportional to 70,202.53, 96,866.06 and 39,987.19 is: 55,174.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,202.53 : 96,866.06 = 39,987.19 : x
  2. Step 2: Convert to fraction form
    70,202.53/96,866.06 = 39,987.19/x
  3. Step 3: Cross multiply
    70,202.53x = 96,866.06 × 39,987.19
  4. Step 4: Simplify right side
    70,202.53x = 3,873,401,723.52
  5. Step 5: Solve for x
    x = 3,873,401,723.52/70,202.53
  6. Step 6: Final answer
    x = 55,174.67

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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.