Home / 85,433.13-128,227.76-43,342.19

Finding the Fourth Proportional to 85,433.13, 128,227.76 and 43,342.19

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Solution

The fourth proportional to 85,433.13, 128,227.76 and 43,342.19 is: 65,052.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,433.13 : 128,227.76 = 43,342.19 : x
  2. Step 2: Convert to fraction form
    85,433.13/128,227.76 = 43,342.19/x
  3. Step 3: Cross multiply
    85,433.13x = 128,227.76 × 43,342.19
  4. Step 4: Simplify right side
    85,433.13x = 5,557,671,722.73
  5. Step 5: Solve for x
    x = 5,557,671,722.73/85,433.13
  6. Step 6: Final answer
    x = 65,052.89

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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.