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Finding the Fourth Proportional to 66,075.40, 98,894.40 and 51,203.80

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Solution

The fourth proportional to 66,075.40, 98,894.40 and 51,203.80 is: 76,636.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,075.40 : 98,894.40 = 51,203.80 : x
  2. Step 2: Convert to fraction form
    66,075.40/98,894.40 = 51,203.80/x
  3. Step 3: Cross multiply
    66,075.40x = 98,894.40 × 51,203.80
  4. Step 4: Simplify right side
    66,075.40x = 5,063,769,078.72
  5. Step 5: Solve for x
    x = 5,063,769,078.72/66,075.40
  6. Step 6: Final answer
    x = 76,636.22

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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.