Home / 53,426.40-80,139.60-51,151.20

Finding the Fourth Proportional to 53,426.40, 80,139.60 and 51,151.20

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Solution

The fourth proportional to 53,426.40, 80,139.60 and 51,151.20 is: 76,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,426.40 : 80,139.60 = 51,151.20 : x
  2. Step 2: Convert to fraction form
    53,426.40/80,139.60 = 51,151.20/x
  3. Step 3: Cross multiply
    53,426.40x = 80,139.60 × 51,151.20
  4. Step 4: Simplify right side
    53,426.40x = 4,099,236,707.52
  5. Step 5: Solve for x
    x = 4,099,236,707.52/53,426.40
  6. Step 6: Final answer
    x = 76,726.80

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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.