Home / 85,943.08-128,920.83-35,972.92

Finding the Fourth Proportional to 85,943.08, 128,920.83 and 35,972.92

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Solution

The fourth proportional to 85,943.08, 128,920.83 and 35,972.92 is: 53,961.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,943.08 : 128,920.83 = 35,972.92 : x
  2. Step 2: Convert to fraction form
    85,943.08/128,920.83 = 35,972.92/x
  3. Step 3: Cross multiply
    85,943.08x = 128,920.83 × 35,972.92
  4. Step 4: Simplify right side
    85,943.08x = 4,637,658,703.92
  5. Step 5: Solve for x
    x = 4,637,658,703.92/85,943.08
  6. Step 6: Final answer
    x = 53,961.98

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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.