Home / 85,934.30-128,884.77-43,228.35

Finding the Fourth Proportional to 85,934.30, 128,884.77 and 43,228.35

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Solution

The fourth proportional to 85,934.30, 128,884.77 and 43,228.35 is: 64,834.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934.30 : 128,884.77 = 43,228.35 : x
  2. Step 2: Convert to fraction form
    85,934.30/128,884.77 = 43,228.35/x
  3. Step 3: Cross multiply
    85,934.30x = 128,884.77 × 43,228.35
  4. Step 4: Simplify right side
    85,934.30x = 5,571,475,947.23
  5. Step 5: Solve for x
    x = 5,571,475,947.23/85,934.30
  6. Step 6: Final answer
    x = 64,834.14

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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.