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Finding the Fourth Proportional to 48,377.70, 72,457.20 and 28,694.70

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Solution

The fourth proportional to 48,377.70, 72,457.20 and 28,694.70 is: 42,977.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,377.70 : 72,457.20 = 28,694.70 : x
  2. Step 2: Convert to fraction form
    48,377.70/72,457.20 = 28,694.70/x
  3. Step 3: Cross multiply
    48,377.70x = 72,457.20 × 28,694.70
  4. Step 4: Simplify right side
    48,377.70x = 2,079,137,616.84
  5. Step 5: Solve for x
    x = 2,079,137,616.84/48,377.70
  6. Step 6: Final answer
    x = 42,977.19

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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.