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Finding the Fourth Proportional to 79,341.47, 119,013.92 and 28,745.01

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Solution

The fourth proportional to 79,341.47, 119,013.92 and 28,745.01 is: 43,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,341.47 : 119,013.92 = 28,745.01 : x
  2. Step 2: Convert to fraction form
    79,341.47/119,013.92 = 28,745.01/x
  3. Step 3: Cross multiply
    79,341.47x = 119,013.92 × 28,745.01
  4. Step 4: Simplify right side
    79,341.47x = 3,421,056,392.40
  5. Step 5: Solve for x
    x = 3,421,056,392.40/79,341.47
  6. Step 6: Final answer
    x = 43,118.14

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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.