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Finding the Fourth Proportional to 55,440, 76,508.82 and 30,291.12

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Solution

The fourth proportional to 55,440, 76,508.82 and 30,291.12 is: 41,802.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,440 : 76,508.82 = 30,291.12 : x
  2. Step 2: Convert to fraction form
    55,440/76,508.82 = 30,291.12/x
  3. Step 3: Cross multiply
    55,440x = 76,508.82 × 30,291.12
  4. Step 4: Simplify right side
    55,440x = 2,317,537,847.68
  5. Step 5: Solve for x
    x = 2,317,537,847.68/55,440
  6. Step 6: Final answer
    x = 41,802.63

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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.