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Finding the Fourth Proportional to 53,953.60, 80,930.40 and 17,012.80

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Solution

The fourth proportional to 53,953.60, 80,930.40 and 17,012.80 is: 25,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,953.60 : 80,930.40 = 17,012.80 : x
  2. Step 2: Convert to fraction form
    53,953.60/80,930.40 = 17,012.80/x
  3. Step 3: Cross multiply
    53,953.60x = 80,930.40 × 17,012.80
  4. Step 4: Simplify right side
    53,953.60x = 1,376,852,709.12
  5. Step 5: Solve for x
    x = 1,376,852,709.12/53,953.60
  6. Step 6: Final answer
    x = 25,519.20

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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.