Home / 70,143.32-105,247.78-40,586.02

Finding the Fourth Proportional to 70,143.32, 105,247.78 and 40,586.02

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Solution

The fourth proportional to 70,143.32, 105,247.78 and 40,586.02 is: 60,898.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,143.32 : 105,247.78 = 40,586.02 : x
  2. Step 2: Convert to fraction form
    70,143.32/105,247.78 = 40,586.02/x
  3. Step 3: Cross multiply
    70,143.32x = 105,247.78 × 40,586.02
  4. Step 4: Simplify right side
    70,143.32x = 4,271,588,504.04
  5. Step 5: Solve for x
    x = 4,271,588,504.04/70,143.32
  6. Step 6: Final answer
    x = 60,898.01

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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.