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Finding the Fourth Proportional to 70,785.77, 106,215.55 and 28,696.96

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Solution

The fourth proportional to 70,785.77, 106,215.55 and 28,696.96 is: 43,060.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,785.77 : 106,215.55 = 28,696.96 : x
  2. Step 2: Convert to fraction form
    70,785.77/106,215.55 = 28,696.96/x
  3. Step 3: Cross multiply
    70,785.77x = 106,215.55 × 28,696.96
  4. Step 4: Simplify right side
    70,785.77x = 3,048,063,052.45
  5. Step 5: Solve for x
    x = 3,048,063,052.45/70,785.77
  6. Step 6: Final answer
    x = 43,060.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.