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Finding the Fourth Proportional to 104,751.78, 144,557.18 and 57,005.11

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Solution

The fourth proportional to 104,751.78, 144,557.18 and 57,005.11 is: 78,666.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,751.78 : 144,557.18 = 57,005.11 : x
  2. Step 2: Convert to fraction form
    104,751.78/144,557.18 = 57,005.11/x
  3. Step 3: Cross multiply
    104,751.78x = 144,557.18 × 57,005.11
  4. Step 4: Simplify right side
    104,751.78x = 8,240,497,947.19
  5. Step 5: Solve for x
    x = 8,240,497,947.19/104,751.78
  6. Step 6: Final answer
    x = 78,666.91

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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.