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Finding the Fourth Proportional to 42,827.48, 64,241.04 and 19,128.92

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Solution

The fourth proportional to 42,827.48, 64,241.04 and 19,128.92 is: 28,693.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,827.48 : 64,241.04 = 19,128.92 : x
  2. Step 2: Convert to fraction form
    42,827.48/64,241.04 = 19,128.92/x
  3. Step 3: Cross multiply
    42,827.48x = 64,241.04 × 19,128.92
  4. Step 4: Simplify right side
    42,827.48x = 1,228,861,714.88
  5. Step 5: Solve for x
    x = 1,228,861,714.88/42,827.48
  6. Step 6: Final answer
    x = 28,693.30

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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.