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Finding the Fourth Proportional to 52,778.79, 72,832.77 and 28,905.66

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Solution

The fourth proportional to 52,778.79, 72,832.77 and 28,905.66 is: 39,888.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,778.79 : 72,832.77 = 28,905.66 : x
  2. Step 2: Convert to fraction form
    52,778.79/72,832.77 = 28,905.66/x
  3. Step 3: Cross multiply
    52,778.79x = 72,832.77 × 28,905.66
  4. Step 4: Simplify right side
    52,778.79x = 2,105,279,286.48
  5. Step 5: Solve for x
    x = 2,105,279,286.48/52,778.79
  6. Step 6: Final answer
    x = 39,888.74

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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.