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Finding the Fourth Proportional to 101,006.94, 139,390.55 and 55,686.58

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Solution

The fourth proportional to 101,006.94, 139,390.55 and 55,686.58 is: 76,848.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,006.94 : 139,390.55 = 55,686.58 : x
  2. Step 2: Convert to fraction form
    101,006.94/139,390.55 = 55,686.58/x
  3. Step 3: Cross multiply
    101,006.94x = 139,390.55 × 55,686.58
  4. Step 4: Simplify right side
    101,006.94x = 7,762,182,735.39
  5. Step 5: Solve for x
    x = 7,762,182,735.39/101,006.94
  6. Step 6: Final answer
    x = 76,848.01

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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.