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Finding the Fourth Proportional to 72,463.10, 100,000.22 and 46,979.69

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Solution

The fourth proportional to 72,463.10, 100,000.22 and 46,979.69 is: 64,832.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,463.10 : 100,000.22 = 46,979.69 : x
  2. Step 2: Convert to fraction form
    72,463.10/100,000.22 = 46,979.69/x
  3. Step 3: Cross multiply
    72,463.10x = 100,000.22 × 46,979.69
  4. Step 4: Simplify right side
    72,463.10x = 4,697,978,600.63
  5. Step 5: Solve for x
    x = 4,697,978,600.63/72,463.10
  6. Step 6: Final answer
    x = 64,832.71

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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.