Home / 53,205.20-79,710.60-43,290.80

Finding the Fourth Proportional to 53,205.20, 79,710.60 and 43,290.80

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Solution

The fourth proportional to 53,205.20, 79,710.60 and 43,290.80 is: 64,857.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,205.20 : 79,710.60 = 43,290.80 : x
  2. Step 2: Convert to fraction form
    53,205.20/79,710.60 = 43,290.80/x
  3. Step 3: Cross multiply
    53,205.20x = 79,710.60 × 43,290.80
  4. Step 4: Simplify right side
    53,205.20x = 3,450,735,642.48
  5. Step 5: Solve for x
    x = 3,450,735,642.48/53,205.20
  6. Step 6: Final answer
    x = 64,857.11

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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.