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Finding the Fourth Proportional to 65,860.80, 90,966.24 and 52,477.44

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Solution

The fourth proportional to 65,860.80, 90,966.24 and 52,477.44 is: 72,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,860.80 : 90,966.24 = 52,477.44 : x
  2. Step 2: Convert to fraction form
    65,860.80/90,966.24 = 52,477.44/x
  3. Step 3: Cross multiply
    65,860.80x = 90,966.24 × 52,477.44
  4. Step 4: Simplify right side
    65,860.80x = 4,773,675,401.63
  5. Step 5: Solve for x
    x = 4,773,675,401.63/65,860.80
  6. Step 6: Final answer
    x = 72,481.28

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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.