Home / 30,380.56-45,643.92-28,702.24

Finding the Fourth Proportional to 30,380.56, 45,643.92 and 28,702.24

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Solution

The fourth proportional to 30,380.56, 45,643.92 and 28,702.24 is: 43,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,380.56 : 45,643.92 = 28,702.24 : x
  2. Step 2: Convert to fraction form
    30,380.56/45,643.92 = 28,702.24/x
  3. Step 3: Cross multiply
    30,380.56x = 45,643.92 × 28,702.24
  4. Step 4: Simplify right side
    30,380.56x = 1,310,082,746.38
  5. Step 5: Solve for x
    x = 1,310,082,746.38/30,380.56
  6. Step 6: Final answer
    x = 43,122.40

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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.