Home / 55,220.86-76,200.30-31,020.51

Finding the Fourth Proportional to 55,220.86, 76,200.30 and 31,020.51

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Solution

The fourth proportional to 55,220.86, 76,200.30 and 31,020.51 is: 42,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,220.86 : 76,200.30 = 31,020.51 : x
  2. Step 2: Convert to fraction form
    55,220.86/76,200.30 = 31,020.51/x
  3. Step 3: Cross multiply
    55,220.86x = 76,200.30 × 31,020.51
  4. Step 4: Simplify right side
    55,220.86x = 2,363,772,422.14
  5. Step 5: Solve for x
    x = 2,363,772,422.14/55,220.86
  6. Step 6: Final answer
    x = 42,805.78

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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.