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Finding the Fourth Proportional to 65,069.58, 89,788.62 and 36,775.20

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Solution

The fourth proportional to 65,069.58, 89,788.62 and 36,775.20 is: 50,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,069.58 : 89,788.62 = 36,775.20 : x
  2. Step 2: Convert to fraction form
    65,069.58/89,788.62 = 36,775.20/x
  3. Step 3: Cross multiply
    65,069.58x = 89,788.62 × 36,775.20
  4. Step 4: Simplify right side
    65,069.58x = 3,301,994,458.22
  5. Step 5: Solve for x
    x = 3,301,994,458.22/65,069.58
  6. Step 6: Final answer
    x = 50,745.59

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1.5x scale

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.