Home / 74,700.33-103,086.44-40,708.78

Finding the Fourth Proportional to 74,700.33, 103,086.44 and 40,708.78

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Solution

The fourth proportional to 74,700.33, 103,086.44 and 40,708.78 is: 56,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,700.33 : 103,086.44 = 40,708.78 : x
  2. Step 2: Convert to fraction form
    74,700.33/103,086.44 = 40,708.78/x
  3. Step 3: Cross multiply
    74,700.33x = 103,086.44 × 40,708.78
  4. Step 4: Simplify right side
    74,700.33x = 4,196,522,898.34
  5. Step 5: Solve for x
    x = 4,196,522,898.34/74,700.33
  6. Step 6: Final answer
    x = 56,178.11

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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.