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Finding the Fourth Proportional to 76,173.36, 105,129.12 and 45,975.84

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Solution

The fourth proportional to 76,173.36, 105,129.12 and 45,975.84 is: 63,452.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,173.36 : 105,129.12 = 45,975.84 : x
  2. Step 2: Convert to fraction form
    76,173.36/105,129.12 = 45,975.84/x
  3. Step 3: Cross multiply
    76,173.36x = 105,129.12 × 45,975.84
  4. Step 4: Simplify right side
    76,173.36x = 4,833,399,600.46
  5. Step 5: Solve for x
    x = 4,833,399,600.46/76,173.36
  6. Step 6: Final answer
    x = 63,452.62

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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.