Home / 55,721.69-76,897.28-30,571.19

Finding the Fourth Proportional to 55,721.69, 76,897.28 and 30,571.19

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Solution

The fourth proportional to 55,721.69, 76,897.28 and 30,571.19 is: 42,188.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,721.69 : 76,897.28 = 30,571.19 : x
  2. Step 2: Convert to fraction form
    55,721.69/76,897.28 = 30,571.19/x
  3. Step 3: Cross multiply
    55,721.69x = 76,897.28 × 30,571.19
  4. Step 4: Simplify right side
    55,721.69x = 2,350,841,357.36
  5. Step 5: Solve for x
    x = 2,350,841,357.36/55,721.69
  6. Step 6: Final answer
    x = 42,188.98

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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.