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Finding the Fourth Proportional to 85,157.76, 117,520.64 and 49,347.84

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Solution

The fourth proportional to 85,157.76, 117,520.64 and 49,347.84 is: 68,101.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,157.76 : 117,520.64 = 49,347.84 : x
  2. Step 2: Convert to fraction form
    85,157.76/117,520.64 = 49,347.84/x
  3. Step 3: Cross multiply
    85,157.76x = 117,520.64 × 49,347.84
  4. Step 4: Simplify right side
    85,157.76x = 5,799,389,739.42
  5. Step 5: Solve for x
    x = 5,799,389,739.42/85,157.76
  6. Step 6: Final answer
    x = 68,101.72

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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.