Home / 70,568.10-105,868.35-20,646.99

Finding the Fourth Proportional to 70,568.10, 105,868.35 and 20,646.99

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Solution

The fourth proportional to 70,568.10, 105,868.35 and 20,646.99 is: 30,975.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,568.10 : 105,868.35 = 20,646.99 : x
  2. Step 2: Convert to fraction form
    70,568.10/105,868.35 = 20,646.99/x
  3. Step 3: Cross multiply
    70,568.10x = 105,868.35 × 20,646.99
  4. Step 4: Simplify right side
    70,568.10x = 2,185,862,763.77
  5. Step 5: Solve for x
    x = 2,185,862,763.77/70,568.10
  6. Step 6: Final answer
    x = 30,975.22

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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.