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Finding the Fourth Proportional to 69,917.60, 96,486.48 and 38,086.40

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Solution

The fourth proportional to 69,917.60, 96,486.48 and 38,086.40 is: 52,559.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,917.60 : 96,486.48 = 38,086.40 : x
  2. Step 2: Convert to fraction form
    69,917.60/96,486.48 = 38,086.40/x
  3. Step 3: Cross multiply
    69,917.60x = 96,486.48 × 38,086.40
  4. Step 4: Simplify right side
    69,917.60x = 3,674,822,671.87
  5. Step 5: Solve for x
    x = 3,674,822,671.87/69,917.60
  6. Step 6: Final answer
    x = 52,559.34

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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.