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Finding the Fourth Proportional to 76,158.76, 105,084.50 and 49,297.54

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Solution

The fourth proportional to 76,158.76, 105,084.50 and 49,297.54 is: 68,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,158.76 : 105,084.50 = 49,297.54 : x
  2. Step 2: Convert to fraction form
    76,158.76/105,084.50 = 49,297.54/x
  3. Step 3: Cross multiply
    76,158.76x = 105,084.50 × 49,297.54
  4. Step 4: Simplify right side
    76,158.76x = 5,180,407,342.13
  5. Step 5: Solve for x
    x = 5,180,407,342.13/76,158.76
  6. Step 6: Final answer
    x = 68,021.16

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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.