Home / 76,132.31-105,059.89-42,140.86

Finding the Fourth Proportional to 76,132.31, 105,059.89 and 42,140.86

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Solution

The fourth proportional to 76,132.31, 105,059.89 and 42,140.86 is: 58,152.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,132.31 : 105,059.89 = 42,140.86 : x
  2. Step 2: Convert to fraction form
    76,132.31/105,059.89 = 42,140.86/x
  3. Step 3: Cross multiply
    76,132.31x = 105,059.89 × 42,140.86
  4. Step 4: Simplify right side
    76,132.31x = 4,427,313,906.13
  5. Step 5: Solve for x
    x = 4,427,313,906.13/76,132.31
  6. Step 6: Final answer
    x = 58,152.89

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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.