Home / 70,033.95-105,019.34-20,102.72

Finding the Fourth Proportional to 70,033.95, 105,019.34 and 20,102.72

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Solution

The fourth proportional to 70,033.95, 105,019.34 and 20,102.72 is: 30,145.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,033.95 : 105,019.34 = 20,102.72 : x
  2. Step 2: Convert to fraction form
    70,033.95/105,019.34 = 20,102.72/x
  3. Step 3: Cross multiply
    70,033.95x = 105,019.34 × 20,102.72
  4. Step 4: Simplify right side
    70,033.95x = 2,111,173,760.99
  5. Step 5: Solve for x
    x = 2,111,173,760.99/70,033.95
  6. Step 6: Final answer
    x = 30,145.00

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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.