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Finding the Fourth Proportional to 127,510, 191,295.72 and 39,958

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Solution

The fourth proportional to 127,510, 191,295.72 and 39,958 is: 59,946.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,510 : 191,295.72 = 39,958 : x
  2. Step 2: Convert to fraction form
    127,510/191,295.72 = 39,958/x
  3. Step 3: Cross multiply
    127,510x = 191,295.72 × 39,958
  4. Step 4: Simplify right side
    127,510x = 7,643,794,379.76
  5. Step 5: Solve for x
    x = 7,643,794,379.76/127,510
  6. Step 6: Final answer
    x = 59,946.63

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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.