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Finding the Fourth Proportional to 78,627.04, 117,785.04 and 36,947.68

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Solution

The fourth proportional to 78,627.04, 117,785.04 and 36,947.68 is: 55,348.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,627.04 : 117,785.04 = 36,947.68 : x
  2. Step 2: Convert to fraction form
    78,627.04/117,785.04 = 36,947.68/x
  3. Step 3: Cross multiply
    78,627.04x = 117,785.04 × 36,947.68
  4. Step 4: Simplify right side
    78,627.04x = 4,351,883,966.71
  5. Step 5: Solve for x
    x = 4,351,883,966.71/78,627.04
  6. Step 6: Final answer
    x = 55,348.44

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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.