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Finding the Fourth Proportional to 77,859.20, 116,788.88 and 21,699.44

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Solution

The fourth proportional to 77,859.20, 116,788.88 and 21,699.44 is: 32,549.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,859.20 : 116,788.88 = 21,699.44 : x
  2. Step 2: Convert to fraction form
    77,859.20/116,788.88 = 21,699.44/x
  3. Step 3: Cross multiply
    77,859.20x = 116,788.88 × 21,699.44
  4. Step 4: Simplify right side
    77,859.20x = 2,534,253,294.23
  5. Step 5: Solve for x
    x = 2,534,253,294.23/77,859.20
  6. Step 6: Final answer
    x = 32,549.18

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1.5x scale

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.