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Finding the Fourth Proportional to 40,374, 60,570.72 and 12,672

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Solution

The fourth proportional to 40,374, 60,570.72 and 12,672 is: 19,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,374 : 60,570.72 = 12,672 : x
  2. Step 2: Convert to fraction form
    40,374/60,570.72 = 12,672/x
  3. Step 3: Cross multiply
    40,374x = 60,570.72 × 12,672
  4. Step 4: Simplify right side
    40,374x = 767,552,163.84
  5. Step 5: Solve for x
    x = 767,552,163.84/40,374
  6. Step 6: Final answer
    x = 19,011.05

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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.