Home / 45,424.67-68,139.73-19,131.46

Finding the Fourth Proportional to 45,424.67, 68,139.73 and 19,131.46

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Solution

The fourth proportional to 45,424.67, 68,139.73 and 19,131.46 is: 28,698.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,424.67 : 68,139.73 = 19,131.46 : x
  2. Step 2: Convert to fraction form
    45,424.67/68,139.73 = 19,131.46/x
  3. Step 3: Cross multiply
    45,424.67x = 68,139.73 × 19,131.46
  4. Step 4: Simplify right side
    45,424.67x = 1,303,612,372.47
  5. Step 5: Solve for x
    x = 1,303,612,372.47/45,424.67
  6. Step 6: Final answer
    x = 28,698.34

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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.