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Finding the Fourth Proportional to 61,075.63, 91,609.04 and 18,954.61

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Solution

The fourth proportional to 61,075.63, 91,609.04 and 18,954.61 is: 28,430.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,075.63 : 91,609.04 = 18,954.61 : x
  2. Step 2: Convert to fraction form
    61,075.63/91,609.04 = 18,954.61/x
  3. Step 3: Cross multiply
    61,075.63x = 91,609.04 × 18,954.61
  4. Step 4: Simplify right side
    61,075.63x = 1,736,413,530.90
  5. Step 5: Solve for x
    x = 1,736,413,530.90/61,075.63
  6. Step 6: Final answer
    x = 28,430.55

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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.