Home / 55,818.20-77,029.64-30,667.68

Finding the Fourth Proportional to 55,818.20, 77,029.64 and 30,667.68

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Solution

The fourth proportional to 55,818.20, 77,029.64 and 30,667.68 is: 42,321.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,818.20 : 77,029.64 = 30,667.68 : x
  2. Step 2: Convert to fraction form
    55,818.20/77,029.64 = 30,667.68/x
  3. Step 3: Cross multiply
    55,818.20x = 77,029.64 × 30,667.68
  4. Step 4: Simplify right side
    55,818.20x = 2,362,320,350.04
  5. Step 5: Solve for x
    x = 2,362,320,350.04/55,818.20
  6. Step 6: Final answer
    x = 42,321.69

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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.