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Finding the Fourth Proportional to 55,423.80, 76,483.98 and 30,272.76

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Solution

The fourth proportional to 55,423.80, 76,483.98 and 30,272.76 is: 41,775.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,423.80 : 76,483.98 = 30,272.76 : x
  2. Step 2: Convert to fraction form
    55,423.80/76,483.98 = 30,272.76/x
  3. Step 3: Cross multiply
    55,423.80x = 76,483.98 × 30,272.76
  4. Step 4: Simplify right side
    55,423.80x = 2,315,381,170.38
  5. Step 5: Solve for x
    x = 2,315,381,170.38/55,423.80
  6. Step 6: Final answer
    x = 41,775.94

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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.