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Finding the Fourth Proportional to 85,300.31, 117,714.44 and 47,574.56

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Solution

The fourth proportional to 85,300.31, 117,714.44 and 47,574.56 is: 65,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,300.31 : 117,714.44 = 47,574.56 : x
  2. Step 2: Convert to fraction form
    85,300.31/117,714.44 = 47,574.56/x
  3. Step 3: Cross multiply
    85,300.31x = 117,714.44 × 47,574.56
  4. Step 4: Simplify right side
    85,300.31x = 5,600,213,101.87
  5. Step 5: Solve for x
    x = 5,600,213,101.87/85,300.31
  6. Step 6: Final answer
    x = 65,652.90

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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.