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Finding the Fourth Proportional to 76,099.55, 105,046.81 and 68,127.93

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Solution

The fourth proportional to 76,099.55, 105,046.81 and 68,127.93 is: 94,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,099.55 : 105,046.81 = 68,127.93 : x
  2. Step 2: Convert to fraction form
    76,099.55/105,046.81 = 68,127.93/x
  3. Step 3: Cross multiply
    76,099.55x = 105,046.81 × 68,127.93
  4. Step 4: Simplify right side
    76,099.55x = 7,156,621,548.08
  5. Step 5: Solve for x
    x = 7,156,621,548.08/76,099.55
  6. Step 6: Final answer
    x = 94,042.90

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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.