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Finding the Fourth Proportional to 48,780.80, 73,192.80 and 17,638.40

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Solution

The fourth proportional to 48,780.80, 73,192.80 and 17,638.40 is: 26,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,780.80 : 73,192.80 = 17,638.40 : x
  2. Step 2: Convert to fraction form
    48,780.80/73,192.80 = 17,638.40/x
  3. Step 3: Cross multiply
    48,780.80x = 73,192.80 × 17,638.40
  4. Step 4: Simplify right side
    48,780.80x = 1,291,003,883.52
  5. Step 5: Solve for x
    x = 1,291,003,883.52/48,780.80
  6. Step 6: Final answer
    x = 26,465.41

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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.