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Finding the Fourth Proportional to 46,805.40, 70,208.40 and 18,727.80

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Solution

The fourth proportional to 46,805.40, 70,208.40 and 18,727.80 is: 28,091.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,805.40 : 70,208.40 = 18,727.80 : x
  2. Step 2: Convert to fraction form
    46,805.40/70,208.40 = 18,727.80/x
  3. Step 3: Cross multiply
    46,805.40x = 70,208.40 × 18,727.80
  4. Step 4: Simplify right side
    46,805.40x = 1,314,848,873.52
  5. Step 5: Solve for x
    x = 1,314,848,873.52/46,805.40
  6. Step 6: Final answer
    x = 28,091.82

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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.