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Finding the Fourth Proportional to 35,290.56, 48,702.78 and 21,869.04

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Solution

The fourth proportional to 35,290.56, 48,702.78 and 21,869.04 is: 30,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,290.56 : 48,702.78 = 21,869.04 : x
  2. Step 2: Convert to fraction form
    35,290.56/48,702.78 = 21,869.04/x
  3. Step 3: Cross multiply
    35,290.56x = 48,702.78 × 21,869.04
  4. Step 4: Simplify right side
    35,290.56x = 1,065,083,043.93
  5. Step 5: Solve for x
    x = 1,065,083,043.93/35,290.56
  6. Step 6: Final answer
    x = 30,180.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.