Home / 59,643.12-89,409.06-20,172.78

Finding the Fourth Proportional to 59,643.12, 89,409.06 and 20,172.78

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Solution

The fourth proportional to 59,643.12, 89,409.06 and 20,172.78 is: 30,240.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,643.12 : 89,409.06 = 20,172.78 : x
  2. Step 2: Convert to fraction form
    59,643.12/89,409.06 = 20,172.78/x
  3. Step 3: Cross multiply
    59,643.12x = 89,409.06 × 20,172.78
  4. Step 4: Simplify right side
    59,643.12x = 1,803,629,297.39
  5. Step 5: Solve for x
    x = 1,803,629,297.39/59,643.12
  6. Step 6: Final answer
    x = 30,240.36

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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.