Home / 55,811.25-77,020.07-30,661.29

Finding the Fourth Proportional to 55,811.25, 77,020.07 and 30,661.29

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Solution

The fourth proportional to 55,811.25, 77,020.07 and 30,661.29 is: 42,312.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,811.25 : 77,020.07 = 30,661.29 : x
  2. Step 2: Convert to fraction form
    55,811.25/77,020.07 = 30,661.29/x
  3. Step 3: Cross multiply
    55,811.25x = 77,020.07 × 30,661.29
  4. Step 4: Simplify right side
    55,811.25x = 2,361,534,548.78
  5. Step 5: Solve for x
    x = 2,361,534,548.78/55,811.25
  6. Step 6: Final answer
    x = 42,312.88

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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.