Home / 85,772.13-128,670.66-26,612.52

Finding the Fourth Proportional to 85,772.13, 128,670.66 and 26,612.52

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Solution

The fourth proportional to 85,772.13, 128,670.66 and 26,612.52 is: 39,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,772.13 : 128,670.66 = 26,612.52 : x
  2. Step 2: Convert to fraction form
    85,772.13/128,670.66 = 26,612.52/x
  3. Step 3: Cross multiply
    85,772.13x = 128,670.66 × 26,612.52
  4. Step 4: Simplify right side
    85,772.13x = 3,424,250,512.66
  5. Step 5: Solve for x
    x = 3,424,250,512.66/85,772.13
  6. Step 6: Final answer
    x = 39,922.65

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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.