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Finding the Fourth Proportional to 76,168.76, 105,113.97 and 43,885.56

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Solution

The fourth proportional to 76,168.76, 105,113.97 and 43,885.56 is: 60,562.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,168.76 : 105,113.97 = 43,885.56 : x
  2. Step 2: Convert to fraction form
    76,168.76/105,113.97 = 43,885.56/x
  3. Step 3: Cross multiply
    76,168.76x = 105,113.97 × 43,885.56
  4. Step 4: Simplify right side
    76,168.76x = 4,612,985,831.45
  5. Step 5: Solve for x
    x = 4,612,985,831.45/76,168.76
  6. Step 6: Final answer
    x = 60,562.70

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1.5x scale

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.