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Finding the Fourth Proportional to 60,972, 91,466.48 and 18,855.48

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Solution

The fourth proportional to 60,972, 91,466.48 and 18,855.48 is: 28,285.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,972 : 91,466.48 = 18,855.48 : x
  2. Step 2: Convert to fraction form
    60,972/91,466.48 = 18,855.48/x
  3. Step 3: Cross multiply
    60,972x = 91,466.48 × 18,855.48
  4. Step 4: Simplify right side
    60,972x = 1,724,644,384.31
  5. Step 5: Solve for x
    x = 1,724,644,384.31/60,972
  6. Step 6: Final answer
    x = 28,285.84

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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.