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Finding the Fourth Proportional to 60,570, 90,858.24 and 19,020.24

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Solution

The fourth proportional to 60,570, 90,858.24 and 19,020.24 is: 28,531.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,570 : 90,858.24 = 19,020.24 : x
  2. Step 2: Convert to fraction form
    60,570/90,858.24 = 19,020.24/x
  3. Step 3: Cross multiply
    60,570x = 90,858.24 × 19,020.24
  4. Step 4: Simplify right side
    60,570x = 1,728,145,530.78
  5. Step 5: Solve for x
    x = 1,728,145,530.78/60,570
  6. Step 6: Final answer
    x = 28,531.38

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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.