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Finding the Fourth Proportional to 40,208.80, 60,316.80 and 16,830.40

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Solution

The fourth proportional to 40,208.80, 60,316.80 and 16,830.40 is: 25,247.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,208.80 : 60,316.80 = 16,830.40 : x
  2. Step 2: Convert to fraction form
    40,208.80/60,316.80 = 16,830.40/x
  3. Step 3: Cross multiply
    40,208.80x = 60,316.80 × 16,830.40
  4. Step 4: Simplify right side
    40,208.80x = 1,015,155,870.72
  5. Step 5: Solve for x
    x = 1,015,155,870.72/40,208.80
  6. Step 6: Final answer
    x = 25,247.11

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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.