Home / 85,560.16-128,293.24-26,379.40

Finding the Fourth Proportional to 85,560.16, 128,293.24 and 26,379.40

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Solution

The fourth proportional to 85,560.16, 128,293.24 and 26,379.40 is: 39,554.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,560.16 : 128,293.24 = 26,379.40 : x
  2. Step 2: Convert to fraction form
    85,560.16/128,293.24 = 26,379.40/x
  3. Step 3: Cross multiply
    85,560.16x = 128,293.24 × 26,379.40
  4. Step 4: Simplify right side
    85,560.16x = 3,384,298,695.26
  5. Step 5: Solve for x
    x = 3,384,298,695.26/85,560.16
  6. Step 6: Final answer
    x = 39,554.61

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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.