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Finding the Fourth Proportional to 115,065.01, 172,621.05 and 48,505.15

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Solution

The fourth proportional to 115,065.01, 172,621.05 and 48,505.15 is: 72,767.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,065.01 : 172,621.05 = 48,505.15 : x
  2. Step 2: Convert to fraction form
    115,065.01/172,621.05 = 48,505.15/x
  3. Step 3: Cross multiply
    115,065.01x = 172,621.05 × 48,505.15
  4. Step 4: Simplify right side
    115,065.01x = 8,373,009,923.41
  5. Step 5: Solve for x
    x = 8,373,009,923.41/115,065.01
  6. Step 6: Final answer
    x = 72,767.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.