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Finding the Fourth Proportional to 85,604, 118,133.94 and 47,878.26

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Solution

The fourth proportional to 85,604, 118,133.94 and 47,878.26 is: 66,072.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,604 : 118,133.94 = 47,878.26 : x
  2. Step 2: Convert to fraction form
    85,604/118,133.94 = 47,878.26/x
  3. Step 3: Cross multiply
    85,604x = 118,133.94 × 47,878.26
  4. Step 4: Simplify right side
    85,604x = 5,656,047,494.14
  5. Step 5: Solve for x
    x = 5,656,047,494.14/85,604
  6. Step 6: Final answer
    x = 66,072.23

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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.