Home / 55,815.26-77,025.58-30,665.30

Finding the Fourth Proportional to 55,815.26, 77,025.58 and 30,665.30

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Solution

The fourth proportional to 55,815.26, 77,025.58 and 30,665.30 is: 42,318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,815.26 : 77,025.58 = 30,665.30 : x
  2. Step 2: Convert to fraction form
    55,815.26/77,025.58 = 30,665.30/x
  3. Step 3: Cross multiply
    55,815.26x = 77,025.58 × 30,665.30
  4. Step 4: Simplify right side
    55,815.26x = 2,362,012,518.37
  5. Step 5: Solve for x
    x = 2,362,012,518.37/55,815.26
  6. Step 6: Final answer
    x = 42,318.40

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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.