Home / 61,106.16-91,661.49-18,990.48

Finding the Fourth Proportional to 61,106.16, 91,661.49 and 18,990.48

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Solution

The fourth proportional to 61,106.16, 91,661.49 and 18,990.48 is: 28,486.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,106.16 : 91,661.49 = 18,990.48 : x
  2. Step 2: Convert to fraction form
    61,106.16/91,661.49 = 18,990.48/x
  3. Step 3: Cross multiply
    61,106.16x = 91,661.49 × 18,990.48
  4. Step 4: Simplify right side
    61,106.16x = 1,740,695,692.62
  5. Step 5: Solve for x
    x = 1,740,695,692.62/61,106.16
  6. Step 6: Final answer
    x = 28,486.42

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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.