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Finding the Fourth Proportional to 64,012.80, 96,033.60 and 19,641.60

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Solution

The fourth proportional to 64,012.80, 96,033.60 and 19,641.60 is: 29,466.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,012.80 : 96,033.60 = 19,641.60 : x
  2. Step 2: Convert to fraction form
    64,012.80/96,033.60 = 19,641.60/x
  3. Step 3: Cross multiply
    64,012.80x = 96,033.60 × 19,641.60
  4. Step 4: Simplify right side
    64,012.80x = 1,886,253,557.76
  5. Step 5: Solve for x
    x = 1,886,253,557.76/64,012.80
  6. Step 6: Final answer
    x = 29,466.82

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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.