Home / 48,515.80-72,759.30-18,916.60

Finding the Fourth Proportional to 48,515.80, 72,759.30 and 18,916.60

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Solution

The fourth proportional to 48,515.80, 72,759.30 and 18,916.60 is: 28,369.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,515.80 : 72,759.30 = 18,916.60 : x
  2. Step 2: Convert to fraction form
    48,515.80/72,759.30 = 18,916.60/x
  3. Step 3: Cross multiply
    48,515.80x = 72,759.30 × 18,916.60
  4. Step 4: Simplify right side
    48,515.80x = 1,376,358,574.38
  5. Step 5: Solve for x
    x = 1,376,358,574.38/48,515.80
  6. Step 6: Final answer
    x = 28,369.29

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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.