Home / 85,279.05-127,961.71-56,835.41

Finding the Fourth Proportional to 85,279.05, 127,961.71 and 56,835.41

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Solution

The fourth proportional to 85,279.05, 127,961.71 and 56,835.41 is: 85,281.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,279.05 : 127,961.71 = 56,835.41 : x
  2. Step 2: Convert to fraction form
    85,279.05/127,961.71 = 56,835.41/x
  3. Step 3: Cross multiply
    85,279.05x = 127,961.71 × 56,835.41
  4. Step 4: Simplify right side
    85,279.05x = 7,272,755,967.97
  5. Step 5: Solve for x
    x = 7,272,755,967.97/85,279.05
  6. Step 6: Final answer
    x = 85,281.86

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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.