Home / 42,078.64-63,107.04-12,489.52

Finding the Fourth Proportional to 42,078.64, 63,107.04 and 12,489.52

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Solution

The fourth proportional to 42,078.64, 63,107.04 and 12,489.52 is: 18,731.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,078.64 : 63,107.04 = 12,489.52 : x
  2. Step 2: Convert to fraction form
    42,078.64/63,107.04 = 12,489.52/x
  3. Step 3: Cross multiply
    42,078.64x = 63,107.04 × 12,489.52
  4. Step 4: Simplify right side
    42,078.64x = 788,176,638.22
  5. Step 5: Solve for x
    x = 788,176,638.22/42,078.64
  6. Step 6: Final answer
    x = 18,731.04

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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.