Home / 78,009.60-107,610.24-48,195.84

Finding the Fourth Proportional to 78,009.60, 107,610.24 and 48,195.84

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Solution

The fourth proportional to 78,009.60, 107,610.24 and 48,195.84 is: 66,483.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,009.60 : 107,610.24 = 48,195.84 : x
  2. Step 2: Convert to fraction form
    78,009.60/107,610.24 = 48,195.84/x
  3. Step 3: Cross multiply
    78,009.60x = 107,610.24 × 48,195.84
  4. Step 4: Simplify right side
    78,009.60x = 5,186,365,909.40
  5. Step 5: Solve for x
    x = 5,186,365,909.40/78,009.60
  6. Step 6: Final answer
    x = 66,483.69

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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.