Home / 42,620.16-63,936.32-20,444.64

Finding the Fourth Proportional to 42,620.16, 63,936.32 and 20,444.64

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Solution

The fourth proportional to 42,620.16, 63,936.32 and 20,444.64 is: 30,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,620.16 : 63,936.32 = 20,444.64 : x
  2. Step 2: Convert to fraction form
    42,620.16/63,936.32 = 20,444.64/x
  3. Step 3: Cross multiply
    42,620.16x = 63,936.32 × 20,444.64
  4. Step 4: Simplify right side
    42,620.16x = 1,307,155,045.32
  5. Step 5: Solve for x
    x = 1,307,155,045.32/42,620.16
  6. Step 6: Final answer
    x = 30,669.88

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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.