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Finding the Fourth Proportional to 53,340.60, 80,021.70 and 18,283.80

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Solution

The fourth proportional to 53,340.60, 80,021.70 and 18,283.80 is: 27,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,340.60 : 80,021.70 = 18,283.80 : x
  2. Step 2: Convert to fraction form
    53,340.60/80,021.70 = 18,283.80/x
  3. Step 3: Cross multiply
    53,340.60x = 80,021.70 × 18,283.80
  4. Step 4: Simplify right side
    53,340.60x = 1,463,100,758.46
  5. Step 5: Solve for x
    x = 1,463,100,758.46/53,340.60
  6. Step 6: Final answer
    x = 27,429.40

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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.