Home / 54,428.80-81,643.20-31,057.60

Finding the Fourth Proportional to 54,428.80, 81,643.20 and 31,057.60

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Solution

The fourth proportional to 54,428.80, 81,643.20 and 31,057.60 is: 46,586.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,428.80 : 81,643.20 = 31,057.60 : x
  2. Step 2: Convert to fraction form
    54,428.80/81,643.20 = 31,057.60/x
  3. Step 3: Cross multiply
    54,428.80x = 81,643.20 × 31,057.60
  4. Step 4: Simplify right side
    54,428.80x = 2,535,641,848.32
  5. Step 5: Solve for x
    x = 2,535,641,848.32/54,428.80
  6. Step 6: Final answer
    x = 46,586.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.