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Finding the Fourth Proportional to 53,263.80, 79,867.80 and 15,818.76

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Solution

The fourth proportional to 53,263.80, 79,867.80 and 15,818.76 is: 23,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,263.80 : 79,867.80 = 15,818.76 : x
  2. Step 2: Convert to fraction form
    53,263.80/79,867.80 = 15,818.76/x
  3. Step 3: Cross multiply
    53,263.80x = 79,867.80 × 15,818.76
  4. Step 4: Simplify right side
    53,263.80x = 1,263,409,559.93
  5. Step 5: Solve for x
    x = 1,263,409,559.93/53,263.80
  6. Step 6: Final answer
    x = 23,719.85

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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.