Home / 78,201.60-107,911.20-46,365.12

Finding the Fourth Proportional to 78,201.60, 107,911.20 and 46,365.12

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Solution

The fourth proportional to 78,201.60, 107,911.20 and 46,365.12 is: 63,979.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,201.60 : 107,911.20 = 46,365.12 : x
  2. Step 2: Convert to fraction form
    78,201.60/107,911.20 = 46,365.12/x
  3. Step 3: Cross multiply
    78,201.60x = 107,911.20 × 46,365.12
  4. Step 4: Simplify right side
    78,201.60x = 5,003,315,737.34
  5. Step 5: Solve for x
    x = 5,003,315,737.34/78,201.60
  6. Step 6: Final answer
    x = 63,979.71

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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.