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Finding the Fourth Proportional to 30,574.88, 45,784.56 and 28,008.80

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Solution

The fourth proportional to 30,574.88, 45,784.56 and 28,008.80 is: 41,941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,574.88 : 45,784.56 = 28,008.80 : x
  2. Step 2: Convert to fraction form
    30,574.88/45,784.56 = 28,008.80/x
  3. Step 3: Cross multiply
    30,574.88x = 45,784.56 × 28,008.80
  4. Step 4: Simplify right side
    30,574.88x = 1,282,370,584.13
  5. Step 5: Solve for x
    x = 1,282,370,584.13/30,574.88
  6. Step 6: Final answer
    x = 41,941.97

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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.