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Finding the Fourth Proportional to 48,989.40, 73,484.10 and 28,195.80

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Solution

The fourth proportional to 48,989.40, 73,484.10 and 28,195.80 is: 42,293.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,989.40 : 73,484.10 = 28,195.80 : x
  2. Step 2: Convert to fraction form
    48,989.40/73,484.10 = 28,195.80/x
  3. Step 3: Cross multiply
    48,989.40x = 73,484.10 × 28,195.80
  4. Step 4: Simplify right side
    48,989.40x = 2,071,942,986.78
  5. Step 5: Solve for x
    x = 2,071,942,986.78/48,989.40
  6. Step 6: Final answer
    x = 42,293.70

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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.