Home / 85,380.17-117,831.69-47,143.52

Finding the Fourth Proportional to 85,380.17, 117,831.69 and 47,143.52

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Solution

The fourth proportional to 85,380.17, 117,831.69 and 47,143.52 is: 65,061.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,380.17 : 117,831.69 = 47,143.52 : x
  2. Step 2: Convert to fraction form
    85,380.17/117,831.69 = 47,143.52/x
  3. Step 3: Cross multiply
    85,380.17x = 117,831.69 × 47,143.52
  4. Step 4: Simplify right side
    85,380.17x = 5,555,000,044.99
  5. Step 5: Solve for x
    x = 5,555,000,044.99/85,380.17
  6. Step 6: Final answer
    x = 65,061.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.