Home / 42,747.40-64,124.75-11,161.65

Finding the Fourth Proportional to 42,747.40, 64,124.75 and 11,161.65

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Solution

The fourth proportional to 42,747.40, 64,124.75 and 11,161.65 is: 16,743.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,747.40 : 64,124.75 = 11,161.65 : x
  2. Step 2: Convert to fraction form
    42,747.40/64,124.75 = 11,161.65/x
  3. Step 3: Cross multiply
    42,747.40x = 64,124.75 × 11,161.65
  4. Step 4: Simplify right side
    42,747.40x = 715,738,015.84
  5. Step 5: Solve for x
    x = 715,738,015.84/42,747.40
  6. Step 6: Final answer
    x = 16,743.43

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1.5x scale

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.