Home / 76,997.12-106,358-61,946.48

Finding the Fourth Proportional to 76,997.12, 106,358 and 61,946.48

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Solution

The fourth proportional to 76,997.12, 106,358 and 61,946.48 is: 85,568.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,997.12 : 106,358 = 61,946.48 : x
  2. Step 2: Convert to fraction form
    76,997.12/106,358 = 61,946.48/x
  3. Step 3: Cross multiply
    76,997.12x = 106,358 × 61,946.48
  4. Step 4: Simplify right side
    76,997.12x = 6,588,503,719.84
  5. Step 5: Solve for x
    x = 6,588,503,719.84/76,997.12
  6. Step 6: Final answer
    x = 85,568.18

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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.