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Finding the Fourth Proportional to 100,904.74, 139,249.25 and 57,886.11

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Solution

The fourth proportional to 100,904.74, 139,249.25 and 57,886.11 is: 79,883.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,904.74 : 139,249.25 = 57,886.11 : x
  2. Step 2: Convert to fraction form
    100,904.74/139,249.25 = 57,886.11/x
  3. Step 3: Cross multiply
    100,904.74x = 139,249.25 × 57,886.11
  4. Step 4: Simplify right side
    100,904.74x = 8,060,596,591.30
  5. Step 5: Solve for x
    x = 8,060,596,591.30/100,904.74
  6. Step 6: Final answer
    x = 79,883.23

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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.