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Finding the Fourth Proportional to 85,385.26, 117,831.54 and 47,659.51

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Solution

The fourth proportional to 85,385.26, 117,831.54 and 47,659.51 is: 65,770.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,385.26 : 117,831.54 = 47,659.51 : x
  2. Step 2: Convert to fraction form
    85,385.26/117,831.54 = 47,659.51/x
  3. Step 3: Cross multiply
    85,385.26x = 117,831.54 × 47,659.51
  4. Step 4: Simplify right side
    85,385.26x = 5,615,793,458.95
  5. Step 5: Solve for x
    x = 5,615,793,458.95/85,385.26
  6. Step 6: Final answer
    x = 65,770.06

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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.