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Finding the Fourth Proportional to 30,357.60, 45,231.17 and 28,659.94

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Solution

The fourth proportional to 30,357.60, 45,231.17 and 28,659.94 is: 42,701.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,357.60 : 45,231.17 = 28,659.94 : x
  2. Step 2: Convert to fraction form
    30,357.60/45,231.17 = 28,659.94/x
  3. Step 3: Cross multiply
    30,357.60x = 45,231.17 × 28,659.94
  4. Step 4: Simplify right side
    30,357.60x = 1,296,322,603.77
  5. Step 5: Solve for x
    x = 1,296,322,603.77/30,357.60
  6. Step 6: Final answer
    x = 42,701.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.