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Finding the Fourth Proportional to 72,351.80, 108,381.90 and 48,732.20

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Solution

The fourth proportional to 72,351.80, 108,381.90 and 48,732.20 is: 73,000.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,351.80 : 108,381.90 = 48,732.20 : x
  2. Step 2: Convert to fraction form
    72,351.80/108,381.90 = 48,732.20/x
  3. Step 3: Cross multiply
    72,351.80x = 108,381.90 × 48,732.20
  4. Step 4: Simplify right side
    72,351.80x = 5,281,688,427.18
  5. Step 5: Solve for x
    x = 5,281,688,427.18/72,351.80
  6. Step 6: Final answer
    x = 73,000.10

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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.