Home / 72,100.32-99,504.24-39,837.75

Finding the Fourth Proportional to 72,100.32, 99,504.24 and 39,837.75

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Solution

The fourth proportional to 72,100.32, 99,504.24 and 39,837.75 is: 54,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,100.32 : 99,504.24 = 39,837.75 : x
  2. Step 2: Convert to fraction form
    72,100.32/99,504.24 = 39,837.75/x
  3. Step 3: Cross multiply
    72,100.32x = 99,504.24 × 39,837.75
  4. Step 4: Simplify right side
    72,100.32x = 3,964,024,837.87
  5. Step 5: Solve for x
    x = 3,964,024,837.87/72,100.32
  6. Step 6: Final answer
    x = 54,979.30

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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.