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Finding the Fourth Proportional to 53,303.64, 79,941.90 and 15,855.32

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Solution

The fourth proportional to 53,303.64, 79,941.90 and 15,855.32 is: 23,778.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,303.64 : 79,941.90 = 15,855.32 : x
  2. Step 2: Convert to fraction form
    53,303.64/79,941.90 = 15,855.32/x
  3. Step 3: Cross multiply
    53,303.64x = 79,941.90 × 15,855.32
  4. Step 4: Simplify right side
    53,303.64x = 1,267,504,405.91
  5. Step 5: Solve for x
    x = 1,267,504,405.91/53,303.64
  6. Step 6: Final answer
    x = 23,778.95

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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.