Home / 81,820.38-112,913.66-47,831.77

Finding the Fourth Proportional to 81,820.38, 112,913.66 and 47,831.77

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Solution

The fourth proportional to 81,820.38, 112,913.66 and 47,831.77 is: 66,008.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,820.38 : 112,913.66 = 47,831.77 : x
  2. Step 2: Convert to fraction form
    81,820.38/112,913.66 = 47,831.77/x
  3. Step 3: Cross multiply
    81,820.38x = 112,913.66 × 47,831.77
  4. Step 4: Simplify right side
    81,820.38x = 5,400,860,214.98
  5. Step 5: Solve for x
    x = 5,400,860,214.98/81,820.38
  6. Step 6: Final answer
    x = 66,008.74

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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.