Home / 48,178.98-72,261.18-13,121.40

Finding the Fourth Proportional to 48,178.98, 72,261.18 and 13,121.40

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Solution

The fourth proportional to 48,178.98, 72,261.18 and 13,121.40 is: 19,680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,178.98 : 72,261.18 = 13,121.40 : x
  2. Step 2: Convert to fraction form
    48,178.98/72,261.18 = 13,121.40/x
  3. Step 3: Cross multiply
    48,178.98x = 72,261.18 × 13,121.40
  4. Step 4: Simplify right side
    48,178.98x = 948,167,847.25
  5. Step 5: Solve for x
    x = 948,167,847.25/48,178.98
  6. Step 6: Final answer
    x = 19,680.11

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.