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Finding the Fourth Proportional to 52,879.12, 72,973.76 and 29,005.20

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Solution

The fourth proportional to 52,879.12, 72,973.76 and 29,005.20 is: 40,027.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,879.12 : 72,973.76 = 29,005.20 : x
  2. Step 2: Convert to fraction form
    52,879.12/72,973.76 = 29,005.20/x
  3. Step 3: Cross multiply
    52,879.12x = 72,973.76 × 29,005.20
  4. Step 4: Simplify right side
    52,879.12x = 2,116,618,503.55
  5. Step 5: Solve for x
    x = 2,116,618,503.55/52,879.12
  6. Step 6: Final answer
    x = 40,027.49

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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.