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Finding the Fourth Proportional to 45,172.71, 67,671.59 and 21,815.55

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Solution

The fourth proportional to 45,172.71, 67,671.59 and 21,815.55 is: 32,681.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,172.71 : 67,671.59 = 21,815.55 : x
  2. Step 2: Convert to fraction form
    45,172.71/67,671.59 = 21,815.55/x
  3. Step 3: Cross multiply
    45,172.71x = 67,671.59 × 21,815.55
  4. Step 4: Simplify right side
    45,172.71x = 1,476,292,846.15
  5. Step 5: Solve for x
    x = 1,476,292,846.15/45,172.71
  6. Step 6: Final answer
    x = 32,681.08

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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.