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Finding the Fourth Proportional to 78,725.49, 108,652.50 and 46,894.92

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Solution

The fourth proportional to 78,725.49, 108,652.50 and 46,894.92 is: 64,721.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725.49 : 108,652.50 = 46,894.92 : x
  2. Step 2: Convert to fraction form
    78,725.49/108,652.50 = 46,894.92/x
  3. Step 3: Cross multiply
    78,725.49x = 108,652.50 × 46,894.92
  4. Step 4: Simplify right side
    78,725.49x = 5,095,250,295.30
  5. Step 5: Solve for x
    x = 5,095,250,295.30/78,725.49
  6. Step 6: Final answer
    x = 64,721.73

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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.