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Finding the Fourth Proportional to 85,620.48, 118,158.72 and 47,894.88

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Solution

The fourth proportional to 85,620.48, 118,158.72 and 47,894.88 is: 66,096.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,620.48 : 118,158.72 = 47,894.88 : x
  2. Step 2: Convert to fraction form
    85,620.48/118,158.72 = 47,894.88/x
  3. Step 3: Cross multiply
    85,620.48x = 118,158.72 × 47,894.88
  4. Step 4: Simplify right side
    85,620.48x = 5,659,197,715.35
  5. Step 5: Solve for x
    x = 5,659,197,715.35/85,620.48
  6. Step 6: Final answer
    x = 66,096.31

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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.