Home / 42,387.60-63,581.40-19,059.60

Finding the Fourth Proportional to 42,387.60, 63,581.40 and 19,059.60

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Solution

The fourth proportional to 42,387.60, 63,581.40 and 19,059.60 is: 28,589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,387.60 : 63,581.40 = 19,059.60 : x
  2. Step 2: Convert to fraction form
    42,387.60/63,581.40 = 19,059.60/x
  3. Step 3: Cross multiply
    42,387.60x = 63,581.40 × 19,059.60
  4. Step 4: Simplify right side
    42,387.60x = 1,211,836,051.44
  5. Step 5: Solve for x
    x = 1,211,836,051.44/42,387.60
  6. Step 6: Final answer
    x = 28,589.40

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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.