Home / 53,610.40-80,415.60-51,335.20

Finding the Fourth Proportional to 53,610.40, 80,415.60 and 51,335.20

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Solution

The fourth proportional to 53,610.40, 80,415.60 and 51,335.20 is: 77,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,610.40 : 80,415.60 = 51,335.20 : x
  2. Step 2: Convert to fraction form
    53,610.40/80,415.60 = 51,335.20/x
  3. Step 3: Cross multiply
    53,610.40x = 80,415.60 × 51,335.20
  4. Step 4: Simplify right side
    53,610.40x = 4,128,150,909.12
  5. Step 5: Solve for x
    x = 4,128,150,909.12/53,610.40
  6. Step 6: Final answer
    x = 77,002.80

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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.