Home / 85,402.76-128,115.07-32,805.41

Finding the Fourth Proportional to 85,402.76, 128,115.07 and 32,805.41

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Solution

The fourth proportional to 85,402.76, 128,115.07 and 32,805.41 is: 49,212.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,402.76 : 128,115.07 = 32,805.41 : x
  2. Step 2: Convert to fraction form
    85,402.76/128,115.07 = 32,805.41/x
  3. Step 3: Cross multiply
    85,402.76x = 128,115.07 × 32,805.41
  4. Step 4: Simplify right side
    85,402.76x = 4,202,866,675.94
  5. Step 5: Solve for x
    x = 4,202,866,675.94/85,402.76
  6. Step 6: Final answer
    x = 49,212.31

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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.