Home / 55,914.61-77,161.39-30,420.69

Finding the Fourth Proportional to 55,914.61, 77,161.39 and 30,420.69

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Solution

The fourth proportional to 55,914.61, 77,161.39 and 30,420.69 is: 41,980.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,914.61 : 77,161.39 = 30,420.69 : x
  2. Step 2: Convert to fraction form
    55,914.61/77,161.39 = 30,420.69/x
  3. Step 3: Cross multiply
    55,914.61x = 77,161.39 × 30,420.69
  4. Step 4: Simplify right side
    55,914.61x = 2,347,302,339.35
  5. Step 5: Solve for x
    x = 2,347,302,339.35/55,914.61
  6. Step 6: Final answer
    x = 41,980.13

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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.