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Finding the Fourth Proportional to 78,988, 118,486.32 and 23,588.32

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Solution

The fourth proportional to 78,988, 118,486.32 and 23,588.32 is: 35,383.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,988 : 118,486.32 = 23,588.32 : x
  2. Step 2: Convert to fraction form
    78,988/118,486.32 = 23,588.32/x
  3. Step 3: Cross multiply
    78,988x = 118,486.32 × 23,588.32
  4. Step 4: Simplify right side
    78,988x = 2,794,893,231.78
  5. Step 5: Solve for x
    x = 2,794,893,231.78/78,988
  6. Step 6: Final answer
    x = 35,383.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.