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Finding the Fourth Proportional to 52,616, 78,937.68 and 15,680

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Solution

The fourth proportional to 52,616, 78,937.68 and 15,680 is: 23,524.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,616 : 78,937.68 = 15,680 : x
  2. Step 2: Convert to fraction form
    52,616/78,937.68 = 15,680/x
  3. Step 3: Cross multiply
    52,616x = 78,937.68 × 15,680
  4. Step 4: Simplify right side
    52,616x = 1,237,742,822.40
  5. Step 5: Solve for x
    x = 1,237,742,822.40/52,616
  6. Step 6: Final answer
    x = 23,524.08

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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.