Home / 85,896.72-128,875.77-52,231.23

Finding the Fourth Proportional to 85,896.72, 128,875.77 and 52,231.23

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Solution

The fourth proportional to 85,896.72, 128,875.77 and 52,231.23 is: 78,365.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,896.72 : 128,875.77 = 52,231.23 : x
  2. Step 2: Convert to fraction form
    85,896.72/128,875.77 = 52,231.23/x
  3. Step 3: Cross multiply
    85,896.72x = 128,875.77 × 52,231.23
  4. Step 4: Simplify right side
    85,896.72x = 6,731,339,984.30
  5. Step 5: Solve for x
    x = 6,731,339,984.30/85,896.72
  6. Step 6: Final answer
    x = 78,365.51

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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.