Home / 55,929.97-77,183.51-30,779.47

Finding the Fourth Proportional to 55,929.97, 77,183.51 and 30,779.47

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Solution

The fourth proportional to 55,929.97, 77,183.51 and 30,779.47 is: 42,475.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,929.97 : 77,183.51 = 30,779.47 : x
  2. Step 2: Convert to fraction form
    55,929.97/77,183.51 = 30,779.47/x
  3. Step 3: Cross multiply
    55,929.97x = 77,183.51 × 30,779.47
  4. Step 4: Simplify right side
    55,929.97x = 2,375,666,990.72
  5. Step 5: Solve for x
    x = 2,375,666,990.72/55,929.97
  6. Step 6: Final answer
    x = 42,475.75

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1.5x scale

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.