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Finding the Fourth Proportional to 69,312.47, 103,975.25 and 19,392.57

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Solution

The fourth proportional to 69,312.47, 103,975.25 and 19,392.57 is: 29,090.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,312.47 : 103,975.25 = 19,392.57 : x
  2. Step 2: Convert to fraction form
    69,312.47/103,975.25 = 19,392.57/x
  3. Step 3: Cross multiply
    69,312.47x = 103,975.25 × 19,392.57
  4. Step 4: Simplify right side
    69,312.47x = 2,016,347,216.93
  5. Step 5: Solve for x
    x = 2,016,347,216.93/69,312.47
  6. Step 6: Final answer
    x = 29,090.69

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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.