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Finding the Fourth Proportional to 55,956.81, 77,218.07 and 30,804.69

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Solution

The fourth proportional to 55,956.81, 77,218.07 and 30,804.69 is: 42,509.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,956.81 : 77,218.07 = 30,804.69 : x
  2. Step 2: Convert to fraction form
    55,956.81/77,218.07 = 30,804.69/x
  3. Step 3: Cross multiply
    55,956.81x = 77,218.07 × 30,804.69
  4. Step 4: Simplify right side
    55,956.81x = 2,378,678,554.72
  5. Step 5: Solve for x
    x = 2,378,678,554.72/55,956.81
  6. Step 6: Final answer
    x = 42,509.19

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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.