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Finding the Fourth Proportional to 53,261, 79,889.34 and 15,819.56

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Solution

The fourth proportional to 53,261, 79,889.34 and 15,819.56 is: 23,728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,261 : 79,889.34 = 15,819.56 : x
  2. Step 2: Convert to fraction form
    53,261/79,889.34 = 15,819.56/x
  3. Step 3: Cross multiply
    53,261x = 79,889.34 × 15,819.56
  4. Step 4: Simplify right side
    53,261x = 1,263,814,207.49
  5. Step 5: Solve for x
    x = 1,263,814,207.49/53,261
  6. Step 6: Final answer
    x = 23,728.70

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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.