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Finding the Fourth Proportional to 65,358.30, 90,187.05 and 36,674.21

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Solution

The fourth proportional to 65,358.30, 90,187.05 and 36,674.21 is: 50,606.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,358.30 : 90,187.05 = 36,674.21 : x
  2. Step 2: Convert to fraction form
    65,358.30/90,187.05 = 36,674.21/x
  3. Step 3: Cross multiply
    65,358.30x = 90,187.05 × 36,674.21
  4. Step 4: Simplify right side
    65,358.30x = 3,307,538,810.98
  5. Step 5: Solve for x
    x = 3,307,538,810.98/65,358.30
  6. Step 6: Final answer
    x = 50,606.26

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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.