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Finding the Fourth Proportional to 86,076, 118,784.32 and 48,349.44

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Solution

The fourth proportional to 86,076, 118,784.32 and 48,349.44 is: 66,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,076 : 118,784.32 = 48,349.44 : x
  2. Step 2: Convert to fraction form
    86,076/118,784.32 = 48,349.44/x
  3. Step 3: Cross multiply
    86,076x = 118,784.32 × 48,349.44
  4. Step 4: Simplify right side
    86,076x = 5,743,155,352.78
  5. Step 5: Solve for x
    x = 5,743,155,352.78/86,076
  6. Step 6: Final answer
    x = 66,721.91

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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.