Home / 78,221.04-107,887.68-51,353.74

Finding the Fourth Proportional to 78,221.04, 107,887.68 and 51,353.74

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Solution

The fourth proportional to 78,221.04, 107,887.68 and 51,353.74 is: 70,830.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,221.04 : 107,887.68 = 51,353.74 : x
  2. Step 2: Convert to fraction form
    78,221.04/107,887.68 = 51,353.74/x
  3. Step 3: Cross multiply
    78,221.04x = 107,887.68 × 51,353.74
  4. Step 4: Simplify right side
    78,221.04x = 5,540,435,867.92
  5. Step 5: Solve for x
    x = 5,540,435,867.92/78,221.04
  6. Step 6: Final answer
    x = 70,830.51

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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.