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Finding the Fourth Proportional to 55,486, 76,572.57 and 30,337.12

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Solution

The fourth proportional to 55,486, 76,572.57 and 30,337.12 is: 41,866.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,486 : 76,572.57 = 30,337.12 : x
  2. Step 2: Convert to fraction form
    55,486/76,572.57 = 30,337.12/x
  3. Step 3: Cross multiply
    55,486x = 76,572.57 × 30,337.12
  4. Step 4: Simplify right side
    55,486x = 2,322,991,244.80
  5. Step 5: Solve for x
    x = 2,322,991,244.80/55,486
  6. Step 6: Final answer
    x = 41,866.26

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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.