Home / 84,539.47-126,817.65-31,245.45

Finding the Fourth Proportional to 84,539.47, 126,817.65 and 31,245.45

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Solution

The fourth proportional to 84,539.47, 126,817.65 and 31,245.45 is: 46,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,539.47 : 126,817.65 = 31,245.45 : x
  2. Step 2: Convert to fraction form
    84,539.47/126,817.65 = 31,245.45/x
  3. Step 3: Cross multiply
    84,539.47x = 126,817.65 × 31,245.45
  4. Step 4: Simplify right side
    84,539.47x = 3,962,474,542.19
  5. Step 5: Solve for x
    x = 3,962,474,542.19/84,539.47
  6. Step 6: Final answer
    x = 46,871.30

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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.