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Finding the Fourth Proportional to 85,990.48, 118,657.80 and 48,268.88

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Solution

The fourth proportional to 85,990.48, 118,657.80 and 48,268.88 is: 66,605.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,990.48 : 118,657.80 = 48,268.88 : x
  2. Step 2: Convert to fraction form
    85,990.48/118,657.80 = 48,268.88/x
  3. Step 3: Cross multiply
    85,990.48x = 118,657.80 × 48,268.88
  4. Step 4: Simplify right side
    85,990.48x = 5,727,479,109.26
  5. Step 5: Solve for x
    x = 5,727,479,109.26/85,990.48
  6. Step 6: Final answer
    x = 66,605.97

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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.