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Finding the Fourth Proportional to 56,287.40, 84,420.30 and 16,845.80

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Solution

The fourth proportional to 56,287.40, 84,420.30 and 16,845.80 is: 25,265.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,287.40 : 84,420.30 = 16,845.80 : x
  2. Step 2: Convert to fraction form
    56,287.40/84,420.30 = 16,845.80/x
  3. Step 3: Cross multiply
    56,287.40x = 84,420.30 × 16,845.80
  4. Step 4: Simplify right side
    56,287.40x = 1,422,127,489.74
  5. Step 5: Solve for x
    x = 1,422,127,489.74/56,287.40
  6. Step 6: Final answer
    x = 25,265.47

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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.