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Finding the Fourth Proportional to 48,615.80, 72,777.90 and 28,884.20

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Solution

The fourth proportional to 48,615.80, 72,777.90 and 28,884.20 is: 43,239.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,615.80 : 72,777.90 = 28,884.20 : x
  2. Step 2: Convert to fraction form
    48,615.80/72,777.90 = 28,884.20/x
  3. Step 3: Cross multiply
    48,615.80x = 72,777.90 × 28,884.20
  4. Step 4: Simplify right side
    48,615.80x = 2,102,131,419.18
  5. Step 5: Solve for x
    x = 2,102,131,419.18/48,615.80
  6. Step 6: Final answer
    x = 43,239.68

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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.