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Finding the Fourth Proportional to 65,697.58, 90,662.60 and 35,482.90

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Solution

The fourth proportional to 65,697.58, 90,662.60 and 35,482.90 is: 48,966.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,697.58 : 90,662.60 = 35,482.90 : x
  2. Step 2: Convert to fraction form
    65,697.58/90,662.60 = 35,482.90/x
  3. Step 3: Cross multiply
    65,697.58x = 90,662.60 × 35,482.90
  4. Step 4: Simplify right side
    65,697.58x = 3,216,971,969.54
  5. Step 5: Solve for x
    x = 3,216,971,969.54/65,697.58
  6. Step 6: Final answer
    x = 48,966.37

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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.