Home / 53,826.20-80,739.30-42,149.40

Finding the Fourth Proportional to 53,826.20, 80,739.30 and 42,149.40

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Solution

The fourth proportional to 53,826.20, 80,739.30 and 42,149.40 is: 63,224.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,826.20 : 80,739.30 = 42,149.40 : x
  2. Step 2: Convert to fraction form
    53,826.20/80,739.30 = 42,149.40/x
  3. Step 3: Cross multiply
    53,826.20x = 80,739.30 × 42,149.40
  4. Step 4: Simplify right side
    53,826.20x = 3,403,113,051.42
  5. Step 5: Solve for x
    x = 3,403,113,051.42/53,826.20
  6. Step 6: Final answer
    x = 63,224.10

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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.