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Finding the Fourth Proportional to 56,443.81, 84,673.92 and 30,134.20

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Solution

The fourth proportional to 56,443.81, 84,673.92 and 30,134.20 is: 45,205.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,443.81 : 84,673.92 = 30,134.20 : x
  2. Step 2: Convert to fraction form
    56,443.81/84,673.92 = 30,134.20/x
  3. Step 3: Cross multiply
    56,443.81x = 84,673.92 × 30,134.20
  4. Step 4: Simplify right side
    56,443.81x = 2,551,580,840.06
  5. Step 5: Solve for x
    x = 2,551,580,840.06/56,443.81
  6. Step 6: Final answer
    x = 45,205.68

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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.