Home / 85,426.05-128,107.44-49,899.45

Finding the Fourth Proportional to 85,426.05, 128,107.44 and 49,899.45

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Solution

The fourth proportional to 85,426.05, 128,107.44 and 49,899.45 is: 74,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,426.05 : 128,107.44 = 49,899.45 : x
  2. Step 2: Convert to fraction form
    85,426.05/128,107.44 = 49,899.45/x
  3. Step 3: Cross multiply
    85,426.05x = 128,107.44 × 49,899.45
  4. Step 4: Simplify right side
    85,426.05x = 6,392,490,796.91
  5. Step 5: Solve for x
    x = 6,392,490,796.91/85,426.05
  6. Step 6: Final answer
    x = 74,830.70

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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.