Home / 43,821.60-65,732.40-28,075.20

Finding the Fourth Proportional to 43,821.60, 65,732.40 and 28,075.20

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Solution

The fourth proportional to 43,821.60, 65,732.40 and 28,075.20 is: 42,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,821.60 : 65,732.40 = 28,075.20 : x
  2. Step 2: Convert to fraction form
    43,821.60/65,732.40 = 28,075.20/x
  3. Step 3: Cross multiply
    43,821.60x = 65,732.40 × 28,075.20
  4. Step 4: Simplify right side
    43,821.60x = 1,845,450,276.48
  5. Step 5: Solve for x
    x = 1,845,450,276.48/43,821.60
  6. Step 6: Final answer
    x = 42,112.80

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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.