Home / 45,420.06-68,130.32-13,830.40

Finding the Fourth Proportional to 45,420.06, 68,130.32 and 13,830.40

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Solution

The fourth proportional to 45,420.06, 68,130.32 and 13,830.40 is: 20,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,420.06 : 68,130.32 = 13,830.40 : x
  2. Step 2: Convert to fraction form
    45,420.06/68,130.32 = 13,830.40/x
  3. Step 3: Cross multiply
    45,420.06x = 68,130.32 × 13,830.40
  4. Step 4: Simplify right side
    45,420.06x = 942,269,577.73
  5. Step 5: Solve for x
    x = 942,269,577.73/45,420.06
  6. Step 6: Final answer
    x = 20,745.67

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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.