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Finding the Fourth Proportional to 78,863.64, 118,088.10 and 60,408.60

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Solution

The fourth proportional to 78,863.64, 118,088.10 and 60,408.60 is: 90,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,863.64 : 118,088.10 = 60,408.60 : x
  2. Step 2: Convert to fraction form
    78,863.64/118,088.10 = 60,408.60/x
  3. Step 3: Cross multiply
    78,863.64x = 118,088.10 × 60,408.60
  4. Step 4: Simplify right side
    78,863.64x = 7,133,536,797.66
  5. Step 5: Solve for x
    x = 7,133,536,797.66/78,863.64
  6. Step 6: Final answer
    x = 90,454.06

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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.