Home / 51,705.20-71,359.90-31,557.90

Finding the Fourth Proportional to 51,705.20, 71,359.90 and 31,557.90

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Solution

The fourth proportional to 51,705.20, 71,359.90 and 31,557.90 is: 43,554.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,705.20 : 71,359.90 = 31,557.90 : x
  2. Step 2: Convert to fraction form
    51,705.20/71,359.90 = 31,557.90/x
  3. Step 3: Cross multiply
    51,705.20x = 71,359.90 × 31,557.90
  4. Step 4: Simplify right side
    51,705.20x = 2,251,968,588.21
  5. Step 5: Solve for x
    x = 2,251,968,588.21/51,705.20
  6. Step 6: Final answer
    x = 43,554.01

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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.