Home / 42,739.20-64,108.20-19,365.60

Finding the Fourth Proportional to 42,739.20, 64,108.20 and 19,365.60

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Solution

The fourth proportional to 42,739.20, 64,108.20 and 19,365.60 is: 29,048.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,739.20 : 64,108.20 = 19,365.60 : x
  2. Step 2: Convert to fraction form
    42,739.20/64,108.20 = 19,365.60/x
  3. Step 3: Cross multiply
    42,739.20x = 64,108.20 × 19,365.60
  4. Step 4: Simplify right side
    42,739.20x = 1,241,493,757.92
  5. Step 5: Solve for x
    x = 1,241,493,757.92/42,739.20
  6. Step 6: Final answer
    x = 29,048.13

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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.