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Finding the Fourth Proportional to 65,699.50, 90,665.30 and 35,484.82

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Solution

The fourth proportional to 65,699.50, 90,665.30 and 35,484.82 is: 48,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,699.50 : 90,665.30 = 35,484.82 : x
  2. Step 2: Convert to fraction form
    65,699.50/90,665.30 = 35,484.82/x
  3. Step 3: Cross multiply
    65,699.50x = 90,665.30 × 35,484.82
  4. Step 4: Simplify right side
    65,699.50x = 3,217,241,850.75
  5. Step 5: Solve for x
    x = 3,217,241,850.75/65,699.50
  6. Step 6: Final answer
    x = 48,969.05

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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.