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Finding the Fourth Proportional to 101,064.44, 139,470 and 55,744.40

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Solution

The fourth proportional to 101,064.44, 139,470 and 55,744.40 is: 76,927.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,064.44 : 139,470 = 55,744.40 : x
  2. Step 2: Convert to fraction form
    101,064.44/139,470 = 55,744.40/x
  3. Step 3: Cross multiply
    101,064.44x = 139,470 × 55,744.40
  4. Step 4: Simplify right side
    101,064.44x = 7,774,671,468
  5. Step 5: Solve for x
    x = 7,774,671,468/101,064.44
  6. Step 6: Final answer
    x = 76,927.86

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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.