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Finding the Fourth Proportional to 52,807.92, 72,868 and 31,579.44

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Solution

The fourth proportional to 52,807.92, 72,868 and 31,579.44 is: 43,575.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,807.92 : 72,868 = 31,579.44 : x
  2. Step 2: Convert to fraction form
    52,807.92/72,868 = 31,579.44/x
  3. Step 3: Cross multiply
    52,807.92x = 72,868 × 31,579.44
  4. Step 4: Simplify right side
    52,807.92x = 2,301,130,633.92
  5. Step 5: Solve for x
    x = 2,301,130,633.92/52,807.92
  6. Step 6: Final answer
    x = 43,575.48

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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.