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Finding the Fourth Proportional to 60,290.36, 90,435.54 and 20,825.94

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Solution

The fourth proportional to 60,290.36, 90,435.54 and 20,825.94 is: 31,238.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,290.36 : 90,435.54 = 20,825.94 : x
  2. Step 2: Convert to fraction form
    60,290.36/90,435.54 = 20,825.94/x
  3. Step 3: Cross multiply
    60,290.36x = 90,435.54 × 20,825.94
  4. Step 4: Simplify right side
    60,290.36x = 1,883,405,129.91
  5. Step 5: Solve for x
    x = 1,883,405,129.91/60,290.36
  6. Step 6: Final answer
    x = 31,238.91

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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.