Home / 42,760.40-64,140.60-19,432.40

Finding the Fourth Proportional to 42,760.40, 64,140.60 and 19,432.40

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Solution

The fourth proportional to 42,760.40, 64,140.60 and 19,432.40 is: 29,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,760.40 : 64,140.60 = 19,432.40 : x
  2. Step 2: Convert to fraction form
    42,760.40/64,140.60 = 19,432.40/x
  3. Step 3: Cross multiply
    42,760.40x = 64,140.60 × 19,432.40
  4. Step 4: Simplify right side
    42,760.40x = 1,246,405,795.44
  5. Step 5: Solve for x
    x = 1,246,405,795.44/42,760.40
  6. Step 6: Final answer
    x = 29,148.60

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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.