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Finding the Fourth Proportional to 53,267.88, 79,881.05 and 19,969.80

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Solution

The fourth proportional to 53,267.88, 79,881.05 and 19,969.80 is: 29,946.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,267.88 : 79,881.05 = 19,969.80 : x
  2. Step 2: Convert to fraction form
    53,267.88/79,881.05 = 19,969.80/x
  3. Step 3: Cross multiply
    53,267.88x = 79,881.05 × 19,969.80
  4. Step 4: Simplify right side
    53,267.88x = 1,595,208,192.88
  5. Step 5: Solve for x
    x = 1,595,208,192.88/53,267.88
  6. Step 6: Final answer
    x = 29,946.91

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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.