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Finding the Fourth Proportional to 78,805.92, 108,752.16 and 50,511.64

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Solution

The fourth proportional to 78,805.92, 108,752.16 and 50,511.64 is: 69,706.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,805.92 : 108,752.16 = 50,511.64 : x
  2. Step 2: Convert to fraction form
    78,805.92/108,752.16 = 50,511.64/x
  3. Step 3: Cross multiply
    78,805.92x = 108,752.16 × 50,511.64
  4. Step 4: Simplify right side
    78,805.92x = 5,493,249,955.14
  5. Step 5: Solve for x
    x = 5,493,249,955.14/78,805.92
  6. Step 6: Final answer
    x = 69,706.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.