Home / 85,856.04-128,784.06-39,161.16

Finding the Fourth Proportional to 85,856.04, 128,784.06 and 39,161.16

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Solution

The fourth proportional to 85,856.04, 128,784.06 and 39,161.16 is: 58,741.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,856.04 : 128,784.06 = 39,161.16 : x
  2. Step 2: Convert to fraction form
    85,856.04/128,784.06 = 39,161.16/x
  3. Step 3: Cross multiply
    85,856.04x = 128,784.06 × 39,161.16
  4. Step 4: Simplify right side
    85,856.04x = 5,043,333,179.11
  5. Step 5: Solve for x
    x = 5,043,333,179.11/85,856.04
  6. Step 6: Final answer
    x = 58,741.74

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Similar ratio
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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.