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Finding the Fourth Proportional to 86,117.87, 118,844.27 and 47,880.60

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Solution

The fourth proportional to 86,117.87, 118,844.27 and 47,880.60 is: 66,076.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,117.87 : 118,844.27 = 47,880.60 : x
  2. Step 2: Convert to fraction form
    86,117.87/118,844.27 = 47,880.60/x
  3. Step 3: Cross multiply
    86,117.87x = 118,844.27 × 47,880.60
  4. Step 4: Simplify right side
    86,117.87x = 5,690,334,714.76
  5. Step 5: Solve for x
    x = 5,690,334,714.76/86,117.87
  6. Step 6: Final answer
    x = 66,076.12

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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.