Home / 43,205.20-64,807.80-12,040.45

Finding the Fourth Proportional to 43,205.20, 64,807.80 and 12,040.45

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Solution

The fourth proportional to 43,205.20, 64,807.80 and 12,040.45 is: 18,060.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,205.20 : 64,807.80 = 12,040.45 : x
  2. Step 2: Convert to fraction form
    43,205.20/64,807.80 = 12,040.45/x
  3. Step 3: Cross multiply
    43,205.20x = 64,807.80 × 12,040.45
  4. Step 4: Simplify right side
    43,205.20x = 780,315,075.51
  5. Step 5: Solve for x
    x = 780,315,075.51/43,205.20
  6. Step 6: Final answer
    x = 18,060.68

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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.