Home / 74,143.86-111,215.84-42,759.09

Finding the Fourth Proportional to 74,143.86, 111,215.84 and 42,759.09

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Solution

The fourth proportional to 74,143.86, 111,215.84 and 42,759.09 is: 64,138.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,143.86 : 111,215.84 = 42,759.09 : x
  2. Step 2: Convert to fraction form
    74,143.86/111,215.84 = 42,759.09/x
  3. Step 3: Cross multiply
    74,143.86x = 111,215.84 × 42,759.09
  4. Step 4: Simplify right side
    74,143.86x = 4,755,487,898.19
  5. Step 5: Solve for x
    x = 4,755,487,898.19/74,143.86
  6. Step 6: Final answer
    x = 64,138.66

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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.