Home / 52,051.56-78,081.18-18,791.40

Finding the Fourth Proportional to 52,051.56, 78,081.18 and 18,791.40

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Solution

The fourth proportional to 52,051.56, 78,081.18 and 18,791.40 is: 28,188.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,051.56 : 78,081.18 = 18,791.40 : x
  2. Step 2: Convert to fraction form
    52,051.56/78,081.18 = 18,791.40/x
  3. Step 3: Cross multiply
    52,051.56x = 78,081.18 × 18,791.40
  4. Step 4: Simplify right side
    52,051.56x = 1,467,254,685.85
  5. Step 5: Solve for x
    x = 1,467,254,685.85/52,051.56
  6. Step 6: Final answer
    x = 28,188.49

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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.