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Finding the Fourth Proportional to 56,305.80, 84,410.10 and 28,603.80

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Solution

The fourth proportional to 56,305.80, 84,410.10 and 28,603.80 is: 42,881.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,305.80 : 84,410.10 = 28,603.80 : x
  2. Step 2: Convert to fraction form
    56,305.80/84,410.10 = 28,603.80/x
  3. Step 3: Cross multiply
    56,305.80x = 84,410.10 × 28,603.80
  4. Step 4: Simplify right side
    56,305.80x = 2,414,449,618.38
  5. Step 5: Solve for x
    x = 2,414,449,618.38/56,305.80
  6. Step 6: Final answer
    x = 42,881.01

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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.