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Finding the Fourth Proportional to 66,767.76, 92,041.92 and 47,872.08

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Solution

The fourth proportional to 66,767.76, 92,041.92 and 47,872.08 is: 65,993.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,767.76 : 92,041.92 = 47,872.08 : x
  2. Step 2: Convert to fraction form
    66,767.76/92,041.92 = 47,872.08/x
  3. Step 3: Cross multiply
    66,767.76x = 92,041.92 × 47,872.08
  4. Step 4: Simplify right side
    66,767.76x = 4,406,238,157.59
  5. Step 5: Solve for x
    x = 4,406,238,157.59/66,767.76
  6. Step 6: Final answer
    x = 65,993.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.