Home / 78,655.32-108,450.33-64,262.10

Finding the Fourth Proportional to 78,655.32, 108,450.33 and 64,262.10

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Solution

The fourth proportional to 78,655.32, 108,450.33 and 64,262.10 is: 88,604.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,655.32 : 108,450.33 = 64,262.10 : x
  2. Step 2: Convert to fraction form
    78,655.32/108,450.33 = 64,262.10/x
  3. Step 3: Cross multiply
    78,655.32x = 108,450.33 × 64,262.10
  4. Step 4: Simplify right side
    78,655.32x = 6,969,245,951.49
  5. Step 5: Solve for x
    x = 6,969,245,951.49/78,655.32
  6. Step 6: Final answer
    x = 88,604.89

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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.