Home / 43,248.80-64,868.40-12,087.20

Finding the Fourth Proportional to 43,248.80, 64,868.40 and 12,087.20

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Solution

The fourth proportional to 43,248.80, 64,868.40 and 12,087.20 is: 18,129.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,248.80 : 64,868.40 = 12,087.20 : x
  2. Step 2: Convert to fraction form
    43,248.80/64,868.40 = 12,087.20/x
  3. Step 3: Cross multiply
    43,248.80x = 64,868.40 × 12,087.20
  4. Step 4: Simplify right side
    43,248.80x = 784,077,324.48
  5. Step 5: Solve for x
    x = 784,077,324.48/43,248.80
  6. Step 6: Final answer
    x = 18,129.46

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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.