Home / 78,330.44-108,050.76-50,004.20

Finding the Fourth Proportional to 78,330.44, 108,050.76 and 50,004.20

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Solution

The fourth proportional to 78,330.44, 108,050.76 and 50,004.20 is: 68,976.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.44 : 108,050.76 = 50,004.20 : x
  2. Step 2: Convert to fraction form
    78,330.44/108,050.76 = 50,004.20/x
  3. Step 3: Cross multiply
    78,330.44x = 108,050.76 × 50,004.20
  4. Step 4: Simplify right side
    78,330.44x = 5,402,991,813.19
  5. Step 5: Solve for x
    x = 5,402,991,813.19/78,330.44
  6. Step 6: Final answer
    x = 68,976.91

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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.