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Finding the Fourth Proportional to 85,733.32, 128,636.72 and 44,209.48

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Solution

The fourth proportional to 85,733.32, 128,636.72 and 44,209.48 is: 66,333.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,733.32 : 128,636.72 = 44,209.48 : x
  2. Step 2: Convert to fraction form
    85,733.32/128,636.72 = 44,209.48/x
  3. Step 3: Cross multiply
    85,733.32x = 128,636.72 × 44,209.48
  4. Step 4: Simplify right side
    85,733.32x = 5,686,962,500.11
  5. Step 5: Solve for x
    x = 5,686,962,500.11/85,733.32
  6. Step 6: Final answer
    x = 66,333.17

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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.