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Finding the Fourth Proportional to 78,877.32, 108,850.74 and 45,341.32

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Solution

The fourth proportional to 78,877.32, 108,850.74 and 45,341.32 is: 62,571.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,877.32 : 108,850.74 = 45,341.32 : x
  2. Step 2: Convert to fraction form
    78,877.32/108,850.74 = 45,341.32/x
  3. Step 3: Cross multiply
    78,877.32x = 108,850.74 × 45,341.32
  4. Step 4: Simplify right side
    78,877.32x = 4,935,436,234.58
  5. Step 5: Solve for x
    x = 4,935,436,234.58/78,877.32
  6. Step 6: Final answer
    x = 62,571.04

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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.