Home / 85,972.16-128,966.43-33,385.74

Finding the Fourth Proportional to 85,972.16, 128,966.43 and 33,385.74

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Solution

The fourth proportional to 85,972.16, 128,966.43 and 33,385.74 is: 50,081.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,972.16 : 128,966.43 = 33,385.74 : x
  2. Step 2: Convert to fraction form
    85,972.16/128,966.43 = 33,385.74/x
  3. Step 3: Cross multiply
    85,972.16x = 128,966.43 × 33,385.74
  4. Step 4: Simplify right side
    85,972.16x = 4,305,639,700.71
  5. Step 5: Solve for x
    x = 4,305,639,700.71/85,972.16
  6. Step 6: Final answer
    x = 50,081.79

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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.