Home / 85,451.30-128,165.89-26,285.66

Finding the Fourth Proportional to 85,451.30, 128,165.89 and 26,285.66

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Solution

The fourth proportional to 85,451.30, 128,165.89 and 26,285.66 is: 39,425.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,451.30 : 128,165.89 = 26,285.66 : x
  2. Step 2: Convert to fraction form
    85,451.30/128,165.89 = 26,285.66/x
  3. Step 3: Cross multiply
    85,451.30x = 128,165.89 × 26,285.66
  4. Step 4: Simplify right side
    85,451.30x = 3,368,925,008.14
  5. Step 5: Solve for x
    x = 3,368,925,008.14/85,451.30
  6. Step 6: Final answer
    x = 39,425.09

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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.