Home / 74,307.11-102,542.96-40,315.46

Finding the Fourth Proportional to 74,307.11, 102,542.96 and 40,315.46

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Solution

The fourth proportional to 74,307.11, 102,542.96 and 40,315.46 is: 55,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,307.11 : 102,542.96 = 40,315.46 : x
  2. Step 2: Convert to fraction form
    74,307.11/102,542.96 = 40,315.46/x
  3. Step 3: Cross multiply
    74,307.11x = 102,542.96 × 40,315.46
  4. Step 4: Simplify right side
    74,307.11x = 4,134,066,190.24
  5. Step 5: Solve for x
    x = 4,134,066,190.24/74,307.11
  6. Step 6: Final answer
    x = 55,634.87

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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.