Home / 76,788.20-105,960.48-42,793.40

Finding the Fourth Proportional to 76,788.20, 105,960.48 and 42,793.40

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Solution

The fourth proportional to 76,788.20, 105,960.48 and 42,793.40 is: 59,050.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,788.20 : 105,960.48 = 42,793.40 : x
  2. Step 2: Convert to fraction form
    76,788.20/105,960.48 = 42,793.40/x
  3. Step 3: Cross multiply
    76,788.20x = 105,960.48 × 42,793.40
  4. Step 4: Simplify right side
    76,788.20x = 4,534,409,204.83
  5. Step 5: Solve for x
    x = 4,534,409,204.83/76,788.20
  6. Step 6: Final answer
    x = 59,050.86

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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.