Home / 70,021.26-105,031.69-30,014.28

Finding the Fourth Proportional to 70,021.26, 105,031.69 and 30,014.28

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Solution

The fourth proportional to 70,021.26, 105,031.69 and 30,014.28 is: 45,021.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,021.26 : 105,031.69 = 30,014.28 : x
  2. Step 2: Convert to fraction form
    70,021.26/105,031.69 = 30,014.28/x
  3. Step 3: Cross multiply
    70,021.26x = 105,031.69 × 30,014.28
  4. Step 4: Simplify right side
    70,021.26x = 3,152,450,477.50
  5. Step 5: Solve for x
    x = 3,152,450,477.50/70,021.26
  6. Step 6: Final answer
    x = 45,021.33

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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.