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Finding the Fourth Proportional to 84,712.74, 127,267.68 and 79,925.28

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Solution

The fourth proportional to 84,712.74, 127,267.68 and 79,925.28 is: 120,075.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,712.74 : 127,267.68 = 79,925.28 : x
  2. Step 2: Convert to fraction form
    84,712.74/127,267.68 = 79,925.28/x
  3. Step 3: Cross multiply
    84,712.74x = 127,267.68 × 79,925.28
  4. Step 4: Simplify right side
    84,712.74x = 10,171,904,958.95
  5. Step 5: Solve for x
    x = 10,171,904,958.95/84,712.74
  6. Step 6: Final answer
    x = 120,075.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.