Home / 85,983.09-128,857.99-48,524.64

Finding the Fourth Proportional to 85,983.09, 128,857.99 and 48,524.64

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Solution

The fourth proportional to 85,983.09, 128,857.99 and 48,524.64 is: 72,721.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,983.09 : 128,857.99 = 48,524.64 : x
  2. Step 2: Convert to fraction form
    85,983.09/128,857.99 = 48,524.64/x
  3. Step 3: Cross multiply
    85,983.09x = 128,857.99 × 48,524.64
  4. Step 4: Simplify right side
    85,983.09x = 6,252,787,333.25
  5. Step 5: Solve for x
    x = 6,252,787,333.25/85,983.09
  6. Step 6: Final answer
    x = 72,721.13

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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.