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Finding the Fourth Proportional to 52,848.36, 79,274.88 and 21,681

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Solution

The fourth proportional to 52,848.36, 79,274.88 and 21,681 is: 32,522.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,848.36 : 79,274.88 = 21,681 : x
  2. Step 2: Convert to fraction form
    52,848.36/79,274.88 = 21,681/x
  3. Step 3: Cross multiply
    52,848.36x = 79,274.88 × 21,681
  4. Step 4: Simplify right side
    52,848.36x = 1,718,758,673.28
  5. Step 5: Solve for x
    x = 1,718,758,673.28/52,848.36
  6. Step 6: Final answer
    x = 32,522.46

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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.