Home / 85,795.52-128,699.28-26,623.28

Finding the Fourth Proportional to 85,795.52, 128,699.28 and 26,623.28

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Solution

The fourth proportional to 85,795.52, 128,699.28 and 26,623.28 is: 39,936.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,795.52 : 128,699.28 = 26,623.28 : x
  2. Step 2: Convert to fraction form
    85,795.52/128,699.28 = 26,623.28/x
  3. Step 3: Cross multiply
    85,795.52x = 128,699.28 × 26,623.28
  4. Step 4: Simplify right side
    85,795.52x = 3,426,396,967.24
  5. Step 5: Solve for x
    x = 3,426,396,967.24/85,795.52
  6. Step 6: Final answer
    x = 39,936.78

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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.