Home / 42,712.96-64,110.78-20,541.64

Finding the Fourth Proportional to 42,712.96, 64,110.78 and 20,541.64

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Solution

The fourth proportional to 42,712.96, 64,110.78 and 20,541.64 is: 30,832.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,712.96 : 64,110.78 = 20,541.64 : x
  2. Step 2: Convert to fraction form
    42,712.96/64,110.78 = 20,541.64/x
  3. Step 3: Cross multiply
    42,712.96x = 64,110.78 × 20,541.64
  4. Step 4: Simplify right side
    42,712.96x = 1,316,940,562.88
  5. Step 5: Solve for x
    x = 1,316,940,562.88/42,712.96
  6. Step 6: Final answer
    x = 30,832.34

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1.5x scale

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.