Home / 76,159.76-105,138.60-47,881.04

Finding the Fourth Proportional to 76,159.76, 105,138.60 and 47,881.04

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Solution

The fourth proportional to 76,159.76, 105,138.60 and 47,881.04 is: 66,099.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,159.76 : 105,138.60 = 47,881.04 : x
  2. Step 2: Convert to fraction form
    76,159.76/105,138.60 = 47,881.04/x
  3. Step 3: Cross multiply
    76,159.76x = 105,138.60 × 47,881.04
  4. Step 4: Simplify right side
    76,159.76x = 5,034,145,512.14
  5. Step 5: Solve for x
    x = 5,034,145,512.14/76,159.76
  6. Step 6: Final answer
    x = 66,099.81

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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.