Home / 70,120.29-105,218.70-40,595.79

Finding the Fourth Proportional to 70,120.29, 105,218.70 and 40,595.79

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Solution

The fourth proportional to 70,120.29, 105,218.70 and 40,595.79 is: 60,915.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,120.29 : 105,218.70 = 40,595.79 : x
  2. Step 2: Convert to fraction form
    70,120.29/105,218.70 = 40,595.79/x
  3. Step 3: Cross multiply
    70,120.29x = 105,218.70 × 40,595.79
  4. Step 4: Simplify right side
    70,120.29x = 4,271,436,249.27
  5. Step 5: Solve for x
    x = 4,271,436,249.27/70,120.29
  6. Step 6: Final answer
    x = 60,915.84

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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.