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Finding the Fourth Proportional to 48,150, 72,239.40 and 20,450.16

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Solution

The fourth proportional to 48,150, 72,239.40 and 20,450.16 is: 30,681.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,150 : 72,239.40 = 20,450.16 : x
  2. Step 2: Convert to fraction form
    48,150/72,239.40 = 20,450.16/x
  3. Step 3: Cross multiply
    48,150x = 72,239.40 × 20,450.16
  4. Step 4: Simplify right side
    48,150x = 1,477,307,288.30
  5. Step 5: Solve for x
    x = 1,477,307,288.30/48,150
  6. Step 6: Final answer
    x = 30,681.36

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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.