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Finding the Fourth Proportional to 85,788, 118,392.30 and 48,074.40

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Solution

The fourth proportional to 85,788, 118,392.30 and 48,074.40 is: 66,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,788 : 118,392.30 = 48,074.40 : x
  2. Step 2: Convert to fraction form
    85,788/118,392.30 = 48,074.40/x
  3. Step 3: Cross multiply
    85,788x = 118,392.30 × 48,074.40
  4. Step 4: Simplify right side
    85,788x = 5,691,638,787.12
  5. Step 5: Solve for x
    x = 5,691,638,787.12/85,788
  6. Step 6: Final answer
    x = 66,345.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.