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Finding the Fourth Proportional to 86,697, 119,651.60 and 48,973.68

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Solution

The fourth proportional to 86,697, 119,651.60 and 48,973.68 is: 67,589.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,697 : 119,651.60 = 48,973.68 : x
  2. Step 2: Convert to fraction form
    86,697/119,651.60 = 48,973.68/x
  3. Step 3: Cross multiply
    86,697x = 119,651.60 × 48,973.68
  4. Step 4: Simplify right side
    86,697x = 5,859,779,169.89
  5. Step 5: Solve for x
    x = 5,859,779,169.89/86,697
  6. Step 6: Final answer
    x = 67,589.18

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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.