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Finding the Fourth Proportional to 79,690.64, 109,870.93 and 65,297.44

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Solution

The fourth proportional to 79,690.64, 109,870.93 and 65,297.44 is: 90,026.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,690.64 : 109,870.93 = 65,297.44 : x
  2. Step 2: Convert to fraction form
    79,690.64/109,870.93 = 65,297.44/x
  3. Step 3: Cross multiply
    79,690.64x = 109,870.93 × 65,297.44
  4. Step 4: Simplify right side
    79,690.64x = 7,174,290,678.38
  5. Step 5: Solve for x
    x = 7,174,290,678.38/79,690.64
  6. Step 6: Final answer
    x = 90,026.77

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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.