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Finding the Fourth Proportional to 29,991.60, 44,987.40 and 28,711.80

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Solution

The fourth proportional to 29,991.60, 44,987.40 and 28,711.80 is: 43,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,991.60 : 44,987.40 = 28,711.80 : x
  2. Step 2: Convert to fraction form
    29,991.60/44,987.40 = 28,711.80/x
  3. Step 3: Cross multiply
    29,991.60x = 44,987.40 × 28,711.80
  4. Step 4: Simplify right side
    29,991.60x = 1,291,669,231.32
  5. Step 5: Solve for x
    x = 1,291,669,231.32/29,991.60
  6. Step 6: Final answer
    x = 43,067.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.