Home / 78,210.54-107,902.26-51,367.59

Finding the Fourth Proportional to 78,210.54, 107,902.26 and 51,367.59

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Solution

The fourth proportional to 78,210.54, 107,902.26 and 51,367.59 is: 70,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,210.54 : 107,902.26 = 51,367.59 : x
  2. Step 2: Convert to fraction form
    78,210.54/107,902.26 = 51,367.59/x
  3. Step 3: Cross multiply
    78,210.54x = 107,902.26 × 51,367.59
  4. Step 4: Simplify right side
    78,210.54x = 5,542,679,051.75
  5. Step 5: Solve for x
    x = 5,542,679,051.75/78,210.54
  6. Step 6: Final answer
    x = 70,868.70

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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.