Home / 53,913.60-81,331.20-51,148.80

Finding the Fourth Proportional to 53,913.60, 81,331.20 and 51,148.80

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Solution

The fourth proportional to 53,913.60, 81,331.20 and 51,148.80 is: 77,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,913.60 : 81,331.20 = 51,148.80 : x
  2. Step 2: Convert to fraction form
    53,913.60/81,331.20 = 51,148.80/x
  3. Step 3: Cross multiply
    53,913.60x = 81,331.20 × 51,148.80
  4. Step 4: Simplify right side
    53,913.60x = 4,159,993,282.56
  5. Step 5: Solve for x
    x = 4,159,993,282.56/53,913.60
  6. Step 6: Final answer
    x = 77,160.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.