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Finding the Fourth Proportional to 30,915.51, 46,240.92 and 28,674.51

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Solution

The fourth proportional to 30,915.51, 46,240.92 and 28,674.51 is: 42,889.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,915.51 : 46,240.92 = 28,674.51 : x
  2. Step 2: Convert to fraction form
    30,915.51/46,240.92 = 28,674.51/x
  3. Step 3: Cross multiply
    30,915.51x = 46,240.92 × 28,674.51
  4. Step 4: Simplify right side
    30,915.51x = 1,325,935,722.95
  5. Step 5: Solve for x
    x = 1,325,935,722.95/30,915.51
  6. Step 6: Final answer
    x = 42,889.01

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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.