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Finding the Fourth Proportional to 70,299.30, 97,015.62 and 40,079.76

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Solution

The fourth proportional to 70,299.30, 97,015.62 and 40,079.76 is: 55,311.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,299.30 : 97,015.62 = 40,079.76 : x
  2. Step 2: Convert to fraction form
    70,299.30/97,015.62 = 40,079.76/x
  3. Step 3: Cross multiply
    70,299.30x = 97,015.62 × 40,079.76
  4. Step 4: Simplify right side
    70,299.30x = 3,888,362,765.85
  5. Step 5: Solve for x
    x = 3,888,362,765.85/70,299.30
  6. Step 6: Final answer
    x = 55,311.54

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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.