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Finding the Fourth Proportional to 84,814.68, 127,222.02 and 28,655.04

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Solution

The fourth proportional to 84,814.68, 127,222.02 and 28,655.04 is: 42,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,814.68 : 127,222.02 = 28,655.04 : x
  2. Step 2: Convert to fraction form
    84,814.68/127,222.02 = 28,655.04/x
  3. Step 3: Cross multiply
    84,814.68x = 127,222.02 × 28,655.04
  4. Step 4: Simplify right side
    84,814.68x = 3,645,552,071.98
  5. Step 5: Solve for x
    x = 3,645,552,071.98/84,814.68
  6. Step 6: Final answer
    x = 42,982.56

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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.