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Finding the Fourth Proportional to 68,785.58, 94,980.18 and 56,040.84

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Solution

The fourth proportional to 68,785.58, 94,980.18 and 56,040.84 is: 77,382.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,785.58 : 94,980.18 = 56,040.84 : x
  2. Step 2: Convert to fraction form
    68,785.58/94,980.18 = 56,040.84/x
  3. Step 3: Cross multiply
    68,785.58x = 94,980.18 × 56,040.84
  4. Step 4: Simplify right side
    68,785.58x = 5,322,769,070.55
  5. Step 5: Solve for x
    x = 5,322,769,070.55/68,785.58
  6. Step 6: Final answer
    x = 77,382.05

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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.