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Finding the Fourth Proportional to 84,607.80, 126,825.30 and 49,529.40

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Solution

The fourth proportional to 84,607.80, 126,825.30 and 49,529.40 is: 74,243.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,607.80 : 126,825.30 = 49,529.40 : x
  2. Step 2: Convert to fraction form
    84,607.80/126,825.30 = 49,529.40/x
  3. Step 3: Cross multiply
    84,607.80x = 126,825.30 × 49,529.40
  4. Step 4: Simplify right side
    84,607.80x = 6,281,581,013.82
  5. Step 5: Solve for x
    x = 6,281,581,013.82/84,607.80
  6. Step 6: Final answer
    x = 74,243.52

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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.