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Finding the Fourth Proportional to 77,066.16, 106,310.52 and 74,897.52

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Solution

The fourth proportional to 77,066.16, 106,310.52 and 74,897.52 is: 103,318.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,066.16 : 106,310.52 = 74,897.52 : x
  2. Step 2: Convert to fraction form
    77,066.16/106,310.52 = 74,897.52/x
  3. Step 3: Cross multiply
    77,066.16x = 106,310.52 × 74,897.52
  4. Step 4: Simplify right side
    77,066.16x = 7,962,394,297.91
  5. Step 5: Solve for x
    x = 7,962,394,297.91/77,066.16
  6. Step 6: Final answer
    x = 103,318.94

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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.