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Finding the Fourth Proportional to 52,794.60, 72,856.63 and 28,920.75

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Solution

The fourth proportional to 52,794.60, 72,856.63 and 28,920.75 is: 39,910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,794.60 : 72,856.63 = 28,920.75 : x
  2. Step 2: Convert to fraction form
    52,794.60/72,856.63 = 28,920.75/x
  3. Step 3: Cross multiply
    52,794.60x = 72,856.63 × 28,920.75
  4. Step 4: Simplify right side
    52,794.60x = 2,107,068,382.07
  5. Step 5: Solve for x
    x = 2,107,068,382.07/52,794.60
  6. Step 6: Final answer
    x = 39,910.68

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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.