Home / 55,930.18-77,183.60-30,779.68

Finding the Fourth Proportional to 55,930.18, 77,183.60 and 30,779.68

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Solution

The fourth proportional to 55,930.18, 77,183.60 and 30,779.68 is: 42,475.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,930.18 : 77,183.60 = 30,779.68 : x
  2. Step 2: Convert to fraction form
    55,930.18/77,183.60 = 30,779.68/x
  3. Step 3: Cross multiply
    55,930.18x = 77,183.60 × 30,779.68
  4. Step 4: Simplify right side
    55,930.18x = 2,375,686,509.25
  5. Step 5: Solve for x
    x = 2,375,686,509.25/55,930.18
  6. Step 6: Final answer
    x = 42,475.93

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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.