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Finding the Fourth Proportional to 52,752.78, 72,800.12 and 28,879.38

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Solution

The fourth proportional to 52,752.78, 72,800.12 and 28,879.38 is: 39,854.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,752.78 : 72,800.12 = 28,879.38 : x
  2. Step 2: Convert to fraction form
    52,752.78/72,800.12 = 28,879.38/x
  3. Step 3: Cross multiply
    52,752.78x = 72,800.12 × 28,879.38
  4. Step 4: Simplify right side
    52,752.78x = 2,102,422,185.13
  5. Step 5: Solve for x
    x = 2,102,422,185.13/52,752.78
  6. Step 6: Final answer
    x = 39,854.24

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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.