Home / 85,646.37-128,437.61-29,470.59

Finding the Fourth Proportional to 85,646.37, 128,437.61 and 29,470.59

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Solution

The fourth proportional to 85,646.37, 128,437.61 and 29,470.59 is: 44,194.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,646.37 : 128,437.61 = 29,470.59 : x
  2. Step 2: Convert to fraction form
    85,646.37/128,437.61 = 29,470.59/x
  3. Step 3: Cross multiply
    85,646.37x = 128,437.61 × 29,470.59
  4. Step 4: Simplify right side
    85,646.37x = 3,785,131,997.54
  5. Step 5: Solve for x
    x = 3,785,131,997.54/85,646.37
  6. Step 6: Final answer
    x = 44,194.89

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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.