Home / 55,815.20-77,025.48-30,664.72

Finding the Fourth Proportional to 55,815.20, 77,025.48 and 30,664.72

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Solution

The fourth proportional to 55,815.20, 77,025.48 and 30,664.72 is: 42,317.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,815.20 : 77,025.48 = 30,664.72 : x
  2. Step 2: Convert to fraction form
    55,815.20/77,025.48 = 30,664.72/x
  3. Step 3: Cross multiply
    55,815.20x = 77,025.48 × 30,664.72
  4. Step 4: Simplify right side
    55,815.20x = 2,361,964,777.07
  5. Step 5: Solve for x
    x = 2,361,964,777.07/55,815.20
  6. Step 6: Final answer
    x = 42,317.59

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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.