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Finding the Fourth Proportional to 74,329.76, 102,324.96 and 64,396.16

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Solution

The fourth proportional to 74,329.76, 102,324.96 and 64,396.16 is: 88,650.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,329.76 : 102,324.96 = 64,396.16 : x
  2. Step 2: Convert to fraction form
    74,329.76/102,324.96 = 64,396.16/x
  3. Step 3: Cross multiply
    74,329.76x = 102,324.96 × 64,396.16
  4. Step 4: Simplify right side
    74,329.76x = 6,589,334,496.15
  5. Step 5: Solve for x
    x = 6,589,334,496.15/74,329.76
  6. Step 6: Final answer
    x = 88,650.02

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1.5x scale

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.