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Finding the Fourth Proportional to 78,013.13, 117,039.13 and 22,609.13

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Solution

The fourth proportional to 78,013.13, 117,039.13 and 22,609.13 is: 33,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,013.13 : 117,039.13 = 22,609.13 : x
  2. Step 2: Convert to fraction form
    78,013.13/117,039.13 = 22,609.13/x
  3. Step 3: Cross multiply
    78,013.13x = 117,039.13 × 22,609.13
  4. Step 4: Simplify right side
    78,013.13x = 2,646,152,263.54
  5. Step 5: Solve for x
    x = 2,646,152,263.54/78,013.13
  6. Step 6: Final answer
    x = 33,919.32

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1.5x scale

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.