Home / 85,721.66-128,590.96-29,554.39

Finding the Fourth Proportional to 85,721.66, 128,590.96 and 29,554.39

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Solution

The fourth proportional to 85,721.66, 128,590.96 and 29,554.39 is: 44,334.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,721.66 : 128,590.96 = 29,554.39 : x
  2. Step 2: Convert to fraction form
    85,721.66/128,590.96 = 29,554.39/x
  3. Step 3: Cross multiply
    85,721.66x = 128,590.96 × 29,554.39
  4. Step 4: Simplify right side
    85,721.66x = 3,800,426,986.95
  5. Step 5: Solve for x
    x = 3,800,426,986.95/85,721.66
  6. Step 6: Final answer
    x = 44,334.50

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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.