Home / 70,041.03-105,062.26-20,121.00

Finding the Fourth Proportional to 70,041.03, 105,062.26 and 20,121.00

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Solution

The fourth proportional to 70,041.03, 105,062.26 and 20,121.00 is: 30,181.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,041.03 : 105,062.26 = 20,121.00 : x
  2. Step 2: Convert to fraction form
    70,041.03/105,062.26 = 20,121.00/x
  3. Step 3: Cross multiply
    70,041.03x = 105,062.26 × 20,121.00
  4. Step 4: Simplify right side
    70,041.03x = 2,113,957,326.90
  5. Step 5: Solve for x
    x = 2,113,957,326.90/70,041.03
  6. Step 6: Final answer
    x = 30,181.70

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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.