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Finding the Fourth Proportional to 40,482.25, 60,733.10 and 12,780.25

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Solution

The fourth proportional to 40,482.25, 60,733.10 and 12,780.25 is: 19,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,482.25 : 60,733.10 = 12,780.25 : x
  2. Step 2: Convert to fraction form
    40,482.25/60,733.10 = 12,780.25/x
  3. Step 3: Cross multiply
    40,482.25x = 60,733.10 × 12,780.25
  4. Step 4: Simplify right side
    40,482.25x = 776,184,201.28
  5. Step 5: Solve for x
    x = 776,184,201.28/40,482.25
  6. Step 6: Final answer
    x = 19,173.45

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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.