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Finding the Fourth Proportional to 66,495.51, 91,734.84 and 43,805.39

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Solution

The fourth proportional to 66,495.51, 91,734.84 and 43,805.39 is: 60,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,495.51 : 91,734.84 = 43,805.39 : x
  2. Step 2: Convert to fraction form
    66,495.51/91,734.84 = 43,805.39/x
  3. Step 3: Cross multiply
    66,495.51x = 91,734.84 × 43,805.39
  4. Step 4: Simplify right side
    66,495.51x = 4,018,479,984.11
  5. Step 5: Solve for x
    x = 4,018,479,984.11/66,495.51
  6. Step 6: Final answer
    x = 60,432.35

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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.