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Finding the Fourth Proportional to 85,250.82, 127,955.10 and 43,160.48

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Solution

The fourth proportional to 85,250.82, 127,955.10 and 43,160.48 is: 64,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,250.82 : 127,955.10 = 43,160.48 : x
  2. Step 2: Convert to fraction form
    85,250.82/127,955.10 = 43,160.48/x
  3. Step 3: Cross multiply
    85,250.82x = 127,955.10 × 43,160.48
  4. Step 4: Simplify right side
    85,250.82x = 5,522,602,894.67
  5. Step 5: Solve for x
    x = 5,522,602,894.67/85,250.82
  6. Step 6: Final answer
    x = 64,780.64

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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.