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Finding the Fourth Proportional to 86,671, 119,615.70 and 48,947.68

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Solution

The fourth proportional to 86,671, 119,615.70 and 48,947.68 is: 67,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,671 : 119,615.70 = 48,947.68 : x
  2. Step 2: Convert to fraction form
    86,671/119,615.70 = 48,947.68/x
  3. Step 3: Cross multiply
    86,671x = 119,615.70 × 48,947.68
  4. Step 4: Simplify right side
    86,671x = 5,854,911,006.58
  5. Step 5: Solve for x
    x = 5,854,911,006.58/86,671
  6. Step 6: Final answer
    x = 67,553.29

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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.