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Finding the Fourth Proportional to 76,440.80, 105,510.60 and 50,984.12

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Solution

The fourth proportional to 76,440.80, 105,510.60 and 50,984.12 is: 70,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,440.80 : 105,510.60 = 50,984.12 : x
  2. Step 2: Convert to fraction form
    76,440.80/105,510.60 = 50,984.12/x
  3. Step 3: Cross multiply
    76,440.80x = 105,510.60 × 50,984.12
  4. Step 4: Simplify right side
    76,440.80x = 5,379,365,091.67
  5. Step 5: Solve for x
    x = 5,379,365,091.67/76,440.80
  6. Step 6: Final answer
    x = 70,372.96

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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.