Home / 85,569.58-128,356.08-26,405.14

Finding the Fourth Proportional to 85,569.58, 128,356.08 and 26,405.14

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Solution

The fourth proportional to 85,569.58, 128,356.08 and 26,405.14 is: 39,608.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,569.58 : 128,356.08 = 26,405.14 : x
  2. Step 2: Convert to fraction form
    85,569.58/128,356.08 = 26,405.14/x
  3. Step 3: Cross multiply
    85,569.58x = 128,356.08 × 26,405.14
  4. Step 4: Simplify right side
    85,569.58x = 3,389,260,262.25
  5. Step 5: Solve for x
    x = 3,389,260,262.25/85,569.58
  6. Step 6: Final answer
    x = 39,608.24

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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.