Home / 85,292.43-127,955.04-26,128.61

Finding the Fourth Proportional to 85,292.43, 127,955.04 and 26,128.61

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Solution

The fourth proportional to 85,292.43, 127,955.04 and 26,128.61 is: 39,197.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,292.43 : 127,955.04 = 26,128.61 : x
  2. Step 2: Convert to fraction form
    85,292.43/127,955.04 = 26,128.61/x
  3. Step 3: Cross multiply
    85,292.43x = 127,955.04 × 26,128.61
  4. Step 4: Simplify right side
    85,292.43x = 3,343,287,337.69
  5. Step 5: Solve for x
    x = 3,343,287,337.69/85,292.43
  6. Step 6: Final answer
    x = 39,197.94

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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.