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Finding the Fourth Proportional to 48,807.78, 67,347.20 and 28,662.78

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Solution

The fourth proportional to 48,807.78, 67,347.20 and 28,662.78 is: 39,550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,807.78 : 67,347.20 = 28,662.78 : x
  2. Step 2: Convert to fraction form
    48,807.78/67,347.20 = 28,662.78/x
  3. Step 3: Cross multiply
    48,807.78x = 67,347.20 × 28,662.78
  4. Step 4: Simplify right side
    48,807.78x = 1,930,357,833.90
  5. Step 5: Solve for x
    x = 1,930,357,833.90/48,807.78
  6. Step 6: Final answer
    x = 39,550.21

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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.