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Finding the Fourth Proportional to 51,640.80, 77,464.88 and 21,624.80

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Solution

The fourth proportional to 51,640.80, 77,464.88 and 21,624.80 is: 32,438.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,640.80 : 77,464.88 = 21,624.80 : x
  2. Step 2: Convert to fraction form
    51,640.80/77,464.88 = 21,624.80/x
  3. Step 3: Cross multiply
    51,640.80x = 77,464.88 × 21,624.80
  4. Step 4: Simplify right side
    51,640.80x = 1,675,162,537.02
  5. Step 5: Solve for x
    x = 1,675,162,537.02/51,640.80
  6. Step 6: Final answer
    x = 32,438.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.