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Finding the Fourth Proportional to 57,992.70, 86,989.05 and 30,287.10

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Solution

The fourth proportional to 57,992.70, 86,989.05 and 30,287.10 is: 45,430.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,992.70 : 86,989.05 = 30,287.10 : x
  2. Step 2: Convert to fraction form
    57,992.70/86,989.05 = 30,287.10/x
  3. Step 3: Cross multiply
    57,992.70x = 86,989.05 × 30,287.10
  4. Step 4: Simplify right side
    57,992.70x = 2,634,646,056.26
  5. Step 5: Solve for x
    x = 2,634,646,056.26/57,992.70
  6. Step 6: Final answer
    x = 45,430.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.