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Finding the Fourth Proportional to 101,013.84, 139,400.04 and 55,693.47

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Solution

The fourth proportional to 101,013.84, 139,400.04 and 55,693.47 is: 76,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,013.84 : 139,400.04 = 55,693.47 : x
  2. Step 2: Convert to fraction form
    101,013.84/139,400.04 = 55,693.47/x
  3. Step 3: Cross multiply
    101,013.84x = 139,400.04 × 55,693.47
  4. Step 4: Simplify right side
    101,013.84x = 7,763,671,945.74
  5. Step 5: Solve for x
    x = 7,763,671,945.74/101,013.84
  6. Step 6: Final answer
    x = 76,857.51

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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.