Home / 78,120.10-107,812.37-44,134.83

Finding the Fourth Proportional to 78,120.10, 107,812.37 and 44,134.83

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Solution

The fourth proportional to 78,120.10, 107,812.37 and 44,134.83 is: 60,909.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,120.10 : 107,812.37 = 44,134.83 : x
  2. Step 2: Convert to fraction form
    78,120.10/107,812.37 = 44,134.83/x
  3. Step 3: Cross multiply
    78,120.10x = 107,812.37 × 44,134.83
  4. Step 4: Simplify right side
    78,120.10x = 4,758,280,621.85
  5. Step 5: Solve for x
    x = 4,758,280,621.85/78,120.10
  6. Step 6: Final answer
    x = 60,909.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.