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Finding the Fourth Proportional to 86,654.40, 119,578.79 and 48,406.37

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Solution

The fourth proportional to 86,654.40, 119,578.79 and 48,406.37 is: 66,798.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,654.40 : 119,578.79 = 48,406.37 : x
  2. Step 2: Convert to fraction form
    86,654.40/119,578.79 = 48,406.37/x
  3. Step 3: Cross multiply
    86,654.40x = 119,578.79 × 48,406.37
  4. Step 4: Simplify right side
    86,654.40x = 5,788,374,312.97
  5. Step 5: Solve for x
    x = 5,788,374,312.97/86,654.40
  6. Step 6: Final answer
    x = 66,798.39

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1.5x scale

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.