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Finding the Fourth Proportional to 70,143.89, 105,215.83 and 35,075.34

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Solution

The fourth proportional to 70,143.89, 105,215.83 and 35,075.34 is: 52,613.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,143.89 : 105,215.83 = 35,075.34 : x
  2. Step 2: Convert to fraction form
    70,143.89/105,215.83 = 35,075.34/x
  3. Step 3: Cross multiply
    70,143.89x = 105,215.83 × 35,075.34
  4. Step 4: Simplify right side
    70,143.89x = 3,690,480,922.94
  5. Step 5: Solve for x
    x = 3,690,480,922.94/70,143.89
  6. Step 6: Final answer
    x = 52,613.01

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.