Home / 70,040.73-105,030.12-20,109.24

Finding the Fourth Proportional to 70,040.73, 105,030.12 and 20,109.24

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Solution

The fourth proportional to 70,040.73, 105,030.12 and 20,109.24 is: 30,154.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,040.73 : 105,030.12 = 20,109.24 : x
  2. Step 2: Convert to fraction form
    70,040.73/105,030.12 = 20,109.24/x
  3. Step 3: Cross multiply
    70,040.73x = 105,030.12 × 20,109.24
  4. Step 4: Simplify right side
    70,040.73x = 2,112,075,890.31
  5. Step 5: Solve for x
    x = 2,112,075,890.31/70,040.73
  6. Step 6: Final answer
    x = 30,154.97

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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.