Home / 74,789.20-103,211.40-42,964.48

Finding the Fourth Proportional to 74,789.20, 103,211.40 and 42,964.48

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Solution

The fourth proportional to 74,789.20, 103,211.40 and 42,964.48 is: 59,292.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,789.20 : 103,211.40 = 42,964.48 : x
  2. Step 2: Convert to fraction form
    74,789.20/103,211.40 = 42,964.48/x
  3. Step 3: Cross multiply
    74,789.20x = 103,211.40 × 42,964.48
  4. Step 4: Simplify right side
    74,789.20x = 4,434,424,131.07
  5. Step 5: Solve for x
    x = 4,434,424,131.07/74,789.20
  6. Step 6: Final answer
    x = 59,292.31

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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.