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Finding the Fourth Proportional to 55,007.60, 82,511.40 and 19,948.40

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Solution

The fourth proportional to 55,007.60, 82,511.40 and 19,948.40 is: 29,922.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,007.60 : 82,511.40 = 19,948.40 : x
  2. Step 2: Convert to fraction form
    55,007.60/82,511.40 = 19,948.40/x
  3. Step 3: Cross multiply
    55,007.60x = 82,511.40 × 19,948.40
  4. Step 4: Simplify right side
    55,007.60x = 1,645,970,411.76
  5. Step 5: Solve for x
    x = 1,645,970,411.76/55,007.60
  6. Step 6: Final answer
    x = 29,922.60

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Similar ratio
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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.