Home / 81,784.32-122,693.76-26,376

Finding the Fourth Proportional to 81,784.32, 122,693.76 and 26,376

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Solution

The fourth proportional to 81,784.32, 122,693.76 and 26,376 is: 39,569.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,784.32 : 122,693.76 = 26,376 : x
  2. Step 2: Convert to fraction form
    81,784.32/122,693.76 = 26,376/x
  3. Step 3: Cross multiply
    81,784.32x = 122,693.76 × 26,376
  4. Step 4: Simplify right side
    81,784.32x = 3,236,170,613.76
  5. Step 5: Solve for x
    x = 3,236,170,613.76/81,784.32
  6. Step 6: Final answer
    x = 39,569.57

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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.