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Finding the Fourth Proportional to 52,660, 72,670.80 and 29,108

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Solution

The fourth proportional to 52,660, 72,670.80 and 29,108 is: 40,169.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,660 : 72,670.80 = 29,108 : x
  2. Step 2: Convert to fraction form
    52,660/72,670.80 = 29,108/x
  3. Step 3: Cross multiply
    52,660x = 72,670.80 × 29,108
  4. Step 4: Simplify right side
    52,660x = 2,115,301,646.40
  5. Step 5: Solve for x
    x = 2,115,301,646.40/52,660
  6. Step 6: Final answer
    x = 40,169.04

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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.