Home / 85,831.20-128,747.04-26,675.52

Finding the Fourth Proportional to 85,831.20, 128,747.04 and 26,675.52

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Solution

The fourth proportional to 85,831.20, 128,747.04 and 26,675.52 is: 40,013.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,831.20 : 128,747.04 = 26,675.52 : x
  2. Step 2: Convert to fraction form
    85,831.20/128,747.04 = 26,675.52/x
  3. Step 3: Cross multiply
    85,831.20x = 128,747.04 × 26,675.52
  4. Step 4: Simplify right side
    85,831.20x = 3,434,394,240.46
  5. Step 5: Solve for x
    x = 3,434,394,240.46/85,831.20
  6. Step 6: Final answer
    x = 40,013.35

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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.