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Finding the Fourth Proportional to 71,798.97, 107,698.50 and 19,208.37

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Solution

The fourth proportional to 71,798.97, 107,698.50 and 19,208.37 is: 28,812.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,798.97 : 107,698.50 = 19,208.37 : x
  2. Step 2: Convert to fraction form
    71,798.97/107,698.50 = 19,208.37/x
  3. Step 3: Cross multiply
    71,798.97x = 107,698.50 × 19,208.37
  4. Step 4: Simplify right side
    71,798.97x = 2,068,712,636.45
  5. Step 5: Solve for x
    x = 2,068,712,636.45/71,798.97
  6. Step 6: Final answer
    x = 28,812.57

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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.