Home / 74,970.57-103,536.86-64,850.43

Finding the Fourth Proportional to 74,970.57, 103,536.86 and 64,850.43

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Solution

The fourth proportional to 74,970.57, 103,536.86 and 64,850.43 is: 89,560.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,970.57 : 103,536.86 = 64,850.43 : x
  2. Step 2: Convert to fraction form
    74,970.57/103,536.86 = 64,850.43/x
  3. Step 3: Cross multiply
    74,970.57x = 103,536.86 × 64,850.43
  4. Step 4: Simplify right side
    74,970.57x = 6,714,409,891.85
  5. Step 5: Solve for x
    x = 6,714,409,891.85/74,970.57
  6. Step 6: Final answer
    x = 89,560.61

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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.