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Finding the Fourth Proportional to 66,147.84, 91,290.24 and 47,062.08

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Solution

The fourth proportional to 66,147.84, 91,290.24 and 47,062.08 is: 64,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,147.84 : 91,290.24 = 47,062.08 : x
  2. Step 2: Convert to fraction form
    66,147.84/91,290.24 = 47,062.08/x
  3. Step 3: Cross multiply
    66,147.84x = 91,290.24 × 47,062.08
  4. Step 4: Simplify right side
    66,147.84x = 4,296,308,578.10
  5. Step 5: Solve for x
    x = 4,296,308,578.10/66,147.84
  6. Step 6: Final answer
    x = 64,950.10

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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.