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Finding the Fourth Proportional to 85,528.87, 118,027.80 and 47,806.63

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Solution

The fourth proportional to 85,528.87, 118,027.80 and 47,806.63 is: 65,972.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,528.87 : 118,027.80 = 47,806.63 : x
  2. Step 2: Convert to fraction form
    85,528.87/118,027.80 = 47,806.63/x
  3. Step 3: Cross multiply
    85,528.87x = 118,027.80 × 47,806.63
  4. Step 4: Simplify right side
    85,528.87x = 5,642,511,364.31
  5. Step 5: Solve for x
    x = 5,642,511,364.31/85,528.87
  6. Step 6: Final answer
    x = 65,972.01

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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.