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Finding the Fourth Proportional to 85,925.36, 128,910.36 and 26,762

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Solution

The fourth proportional to 85,925.36, 128,910.36 and 26,762 is: 40,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,925.36 : 128,910.36 = 26,762 : x
  2. Step 2: Convert to fraction form
    85,925.36/128,910.36 = 26,762/x
  3. Step 3: Cross multiply
    85,925.36x = 128,910.36 × 26,762
  4. Step 4: Simplify right side
    85,925.36x = 3,449,899,054.32
  5. Step 5: Solve for x
    x = 3,449,899,054.32/85,925.36
  6. Step 6: Final answer
    x = 40,149.95

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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.