Home / 78,716.32-108,627.12-42,906.64

Finding the Fourth Proportional to 78,716.32, 108,627.12 and 42,906.64

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Solution

The fourth proportional to 78,716.32, 108,627.12 and 42,906.64 is: 59,210.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,716.32 : 108,627.12 = 42,906.64 : x
  2. Step 2: Convert to fraction form
    78,716.32/108,627.12 = 42,906.64/x
  3. Step 3: Cross multiply
    78,716.32x = 108,627.12 × 42,906.64
  4. Step 4: Simplify right side
    78,716.32x = 4,660,824,732.08
  5. Step 5: Solve for x
    x = 4,660,824,732.08/78,716.32
  6. Step 6: Final answer
    x = 59,210.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.