Home / 85,731.84-128,580.75-26,553.24

Finding the Fourth Proportional to 85,731.84, 128,580.75 and 26,553.24

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Solution

The fourth proportional to 85,731.84, 128,580.75 and 26,553.24 is: 39,824.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,731.84 : 128,580.75 = 26,553.24 : x
  2. Step 2: Convert to fraction form
    85,731.84/128,580.75 = 26,553.24/x
  3. Step 3: Cross multiply
    85,731.84x = 128,580.75 × 26,553.24
  4. Step 4: Simplify right side
    85,731.84x = 3,414,235,514.13
  5. Step 5: Solve for x
    x = 3,414,235,514.13/85,731.84
  6. Step 6: Final answer
    x = 39,824.59

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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.