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Finding the Fourth Proportional to 61,945.20, 85,474.80 and 36,464.40

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Solution

The fourth proportional to 61,945.20, 85,474.80 and 36,464.40 is: 50,315.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,945.20 : 85,474.80 = 36,464.40 : x
  2. Step 2: Convert to fraction form
    61,945.20/85,474.80 = 36,464.40/x
  3. Step 3: Cross multiply
    61,945.20x = 85,474.80 × 36,464.40
  4. Step 4: Simplify right side
    61,945.20x = 3,116,787,297.12
  5. Step 5: Solve for x
    x = 3,116,787,297.12/61,945.20
  6. Step 6: Final answer
    x = 50,315.24

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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.