Home / 85,968.43-128,970.82-26,001.38

Finding the Fourth Proportional to 85,968.43, 128,970.82 and 26,001.38

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Solution

The fourth proportional to 85,968.43, 128,970.82 and 26,001.38 is: 39,007.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968.43 : 128,970.82 = 26,001.38 : x
  2. Step 2: Convert to fraction form
    85,968.43/128,970.82 = 26,001.38/x
  3. Step 3: Cross multiply
    85,968.43x = 128,970.82 × 26,001.38
  4. Step 4: Simplify right side
    85,968.43x = 3,353,418,524.87
  5. Step 5: Solve for x
    x = 3,353,418,524.87/85,968.43
  6. Step 6: Final answer
    x = 39,007.56

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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.