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Finding the Fourth Proportional to 77,885.47, 116,830.84 and 21,726.96

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Solution

The fourth proportional to 77,885.47, 116,830.84 and 21,726.96 is: 32,591.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,885.47 : 116,830.84 = 21,726.96 : x
  2. Step 2: Convert to fraction form
    77,885.47/116,830.84 = 21,726.96/x
  3. Step 3: Cross multiply
    77,885.47x = 116,830.84 × 21,726.96
  4. Step 4: Simplify right side
    77,885.47x = 2,538,378,294.66
  5. Step 5: Solve for x
    x = 2,538,378,294.66/77,885.47
  6. Step 6: Final answer
    x = 32,591.17

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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.