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Finding the Fourth Proportional to 65,075.60, 89,796.88 and 36,781.20

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Solution

The fourth proportional to 65,075.60, 89,796.88 and 36,781.20 is: 50,753.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,075.60 : 89,796.88 = 36,781.20 : x
  2. Step 2: Convert to fraction form
    65,075.60/89,796.88 = 36,781.20/x
  3. Step 3: Cross multiply
    65,075.60x = 89,796.88 × 36,781.20
  4. Step 4: Simplify right side
    65,075.60x = 3,302,837,002.66
  5. Step 5: Solve for x
    x = 3,302,837,002.66/65,075.60
  6. Step 6: Final answer
    x = 50,753.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.