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Finding the Fourth Proportional to 62,120.90, 93,152.79 and 19,993.20

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Solution

The fourth proportional to 62,120.90, 93,152.79 and 19,993.20 is: 29,980.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,120.90 : 93,152.79 = 19,993.20 : x
  2. Step 2: Convert to fraction form
    62,120.90/93,152.79 = 19,993.20/x
  3. Step 3: Cross multiply
    62,120.90x = 93,152.79 × 19,993.20
  4. Step 4: Simplify right side
    62,120.90x = 1,862,422,361.03
  5. Step 5: Solve for x
    x = 1,862,422,361.03/62,120.90
  6. Step 6: Final answer
    x = 29,980.61

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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.